Assistant Sub Inspector Trainee Question Paper and Answer Key

 PROVISIONAL ANSWER KEY
Question Paper Code: 48/2024/OL
Category Code: 268/2023
Exam: Assistant Sub Inspector Trainee (Telecommunications) (SR for ST only)
Date of Test 03-05-2024
Department Police

Question1:-Which of the following statements are correct about "Synod of Diamper" (Udayamperoor Sunhados) ?
i. Priests conference held at Udayamperoor to make the Christian church of Kerala closer to the pope of Rome.
ii. Udayamperoor is a town situated in Ernakulam District.
iii. The conference was presided over by Alexis de Menezes.
iv. It was an event in the history of Kerala during the Portuguese rule.
        A:-Only (i), (ii)
        B:-Only (i), (ii), (iii)
        C:-Only (i), (ii), (iv)
        D:-All are correct
        Correct Answer:- Option-D

Question2:-Who founded the "Vaala Samudaya Parishkarani Sabha" ?
        A:-Pandit K. P. Karuppan
        B:-Velukkutty Arayan
        C:-V. V. Govindan
        D:-N. Krishnan
        Correct Answer:- Option-A

Question3:-Which of the following statements are correct about Vakkom Abdul Khader Moulavi ?
 i. Father of Muslim renaissance in Kerala.
ii. Founder of Swadeshabhimani News paper.
iii. Started Travancore Muslim Mahajana Sabha.
iv. Author of the book "Delhi Durbar".
        A:-Only (i), (ii)
        B:-Only (i), (ii), (iii)
        C:-Only (i), (ii), (iv)
        D:-All are correct
        Correct Answer:- Option-B

Question4:-Which among the following is the first printing press in Kerala ?
        A:-C. M. S. Press
        B:-Travancore Press
        C:-Deepika
        D:-Hindusthan Press
        Correct Answer:- Option-A

Question5:-Who was the founder of Samatwa Samajam ?
        A:-Kumaraguru
        B:-Brahmananda Sivayogi
        C:-Vaikunta Swamikal
        D:-M. C. Joseph
        Correct Answer:- Option-C

Question6:-Who is the father of the library movement in Kerala ?
        A:-P. Krishna Pillai
        B:-P. N. Panicker
        C:-Joseph Mundasseri
        D:-Sardar K. M. Panicker
        Correct Answer:- Option-B

Question7:-Which among the following is not written by Lalithambika Antharjanam ?
        A:-Agnisakshi
        B:-Kunjomana
        C:-Thulavarshapacha
        D:-Gosayi Paranja Katha
        Correct Answer:- Option-C

Question8:-Who among the following is not associated with Vaikom Satyagraha ?
        A:-T. K. Madhavan
        B:-C. Kesavan
        C:-K. Kelappan
        D:-K. P. Kesavamenon
        Correct Answer:- Option-B

Question9:-Who among the following made the famous Temple entry Proclamation ?
        A:-Sree Moolam Thirunnal
        B:-Sethu Lekshmi Bhai
        C:-Sree Chithira Thirunnal
        D:-Sree Visakham Thirunnal
        Correct Answer:- Option-C

Question10:-The Malayalam Daily Kerala Kaumudi was founded by
        A:-C. V. Kunjiraman
        B:-Dr. Palpu
        C:-M. Govindan
        D:-V. K. Panicker
        Correct Answer:- Option-A

Question11:-Who founded Sadhujana Paripalana Sangham ?
        A:-Ayyankali
        B:-Chattambi Swamikal
        C:-Sreenarayana Guru
        D:-Vagbhadanandan
        Correct Answer:- Option-A

Question12:-Which of the following statements are correct about Mannathu Padmanabhan ?
 i. Ente Jeevitha Smaranakal is the auto biography of Mannathu Padmanabhan.
ii. First general secretary of Nair Service Society.
iii. Known as "Bharatha Kesari".
iv. Wrote Pancha Kalyani Niroopanam.
        A:-Only (i), (ii)
        B:-Only (i), (ii), (iv)
        C:-Only (i), (ii), (iii)
        D:-All are correct
        Correct Answer:- Option-D

Question13:-Who is the first editor of Bhashaposhini ?
        A:-Kandathil Varghese Mappila
        B:-S. Padmanabha Panicker
        C:-Kattakkayathil Cheriyan Mappila
        D:-Moorkoth Kumaran
        Correct Answer:- Option-A

Question14:-Which among the following is not written by Vaikkom Muhammed Basheer ?
        A:-Bhargaveenilayam
        B:-Jeevitha Nizhalpadukal
        C:-Balyakala Sakhi
        D:-Mindapennu
        Correct Answer:- Option-D

Question15:-How many times has the preamble of the Constitution of India been amended ?
        A:-1
        B:-2
        C:-3
        D:-4
        Correct Answer:- Option-A

Question16:-Which among the following articles of the Fundamental Rights in the Constitution of India cannot be suspended during National Emergency ?
        A:-14
        B:-21
        C:-21A
        D:-22
        Correct Answer:- Option-B

Question17:-Which of the following statements are correct about "Chief Justice of the Supreme Court of India" ?
 i. Retirement age of the Chief Justice of the Supreme Court of India is 65 years.
ii. Salary of the Chief Justice of the Supreme Court of India is given from the contingency fund of India.
iii. The first Chief Justice of the Supreme Court of India is Harilal J. Kania.
iv. Y. V. Chandrachood is the longest serving Chief Justice of the Supreme Court of India.
        A:-Only (i), (ii)
        B:-Only (i), (ii), (iii)
        C:-Only (i), (iii), (iv)
        D:-All are correct
        Correct Answer:- Option-C

Question18:-Who was the first general secretary of Sree Narayana Dharma Paripalana Yogam ?
        A:-Kumaran Asan
        B:-N. Kumaran
        C:-T. K. Madhavan
        D:-N. Krishnan
        Correct Answer:- Option-A

Question19:-The President of India who declared National Emergency in India in 1975 ?
        A:-V. V. Giri
        B:-Fakrudeen Ali Ahammed
        C:-B. D. Jatti
        D:-Neelam Sanjeeva Reddy
        Correct Answer:- Option-B

Question20:-Who is known as the Jhansi Rani of Travancore ?
        A:-Sethu Parvathi Bai
        B:-Akkamma Cherian
        C:-Annie Mascarene
        D:-K. R. Gouri Amma
        Correct Answer:- Option-B

Question21:-The carrier is transmitted as full power but only one of the side bands is transmitted. This system is
        A:-DSBFC
        B:-SSBFC
        C:-SSBSC
        D:-VSB
        Correct Answer:- Option-B

Question22:-What is the effect of increasing its modulation depth to 100% in amplitude modulation process ?
        A:-No modulation
        B:-Under modulation
        C:-Low level modulation
        D:-Over modulation
        Correct Answer:- Option-D

Question23:-In FM, frequency deviation is doubled
        A:-Modulation is doubled
        B:-Carrier swing is halved
        C:-Modulation is halved
        D:-Modulation index is decreased
        Correct Answer:- Option-A

Question24:-In super heterodyne receiver, the output of mixer stage is
        A:-AF
        B:-RF
        C:-IF
        D:-VHF
        Correct Answer:- Option-C

Question25:-In FM system, the modulation index is equal to 1 (100%) for a frequency deviation of
        A:-100 KHz
        B:-75 KHz
        C:-50 KHz
        D:-25 KHz
        Correct Answer:- Option-B

Question26:-In FM radio receiver, the intermediate frequency is
        A:-455 KHz
        B:-1055 KHz
        C:-10.7 MHz
        D:-15.6 MHz
        Correct Answer:- Option-C

Question27:-Which one is not a limitations of Amplitude modulation ?
        A:-Low efficiency
        B:-Needs less audio power
        C:-Noisy reception
        D:-Limited operating range
        Correct Answer:- Option-B

Question28:-88 MHz to 108 MHz frequency range is used in
        A:-FM band
        B:-SW band
        C:-AM band
        D:-MW band
        Correct Answer:- Option-A

Question29:-Short wave radio transmission is done using
        A:-Ground wave propagation
        B:-Space wave propagation
        C:-Ground level radio wave
        D:-Sky wave propagation
        Correct Answer:- Option-D

Question30:-____________ is used for selecting desired station in radio receiver.
        A:-Zener diode
        B:-Gang capacitor
        C:-Crystal diode
        D:-Electrolytic capacitor
        Correct Answer:- Option-B

Question31:-In TV transmission
        A:-Both picture and sound are FM
        B:-Picture and sound both the signals are AM
        C:-Picture signal is AM and sound signal is FM
        D:-Picture signal is FM and sound signal is AM
        Correct Answer:- Option-C

Question32:-In the 625 line system, 2.5 line period (2.5 × 64 = 160 Micro seconds) has been allotted for the
        A:-Vertical sync pulses
        B:-Horizontal sync pulses
        C:-Horizontal blanking pulses
        D:-Line sync pulses
        Correct Answer:- Option-A

Question33:-For TV reception, Yagi uda antenna consists of
        A:-Reflector, dipole and LNB
        B:-Dipole, transponder and directors
        C:-Reflector, director and LNB
        D:-Dipole, reflector and directors
        Correct Answer:- Option-D

Question34:-The length of a transmitting antenna is kept proportional to the
        A:-Current of the signal to be radiated
        B:-Velocity of the signal to be radiated
        C:-Wavelength of the signal to be radiated
        D:-Amplitude of the signal to be radiated
        Correct Answer:- Option-C

Question35:-What is the characteristic impedance of RG 6U cable used for long line cable TV transmission ?
        A:-25 Ohm
        B:-50 Ohm
        C:-75 Ohm
        D:-100 Ohm
        Correct Answer:- Option-C

Question36:-What is a co-axial cable ?
        A:-A center wire inside an insulating material which is covered by a metal sleeve or shield
        B:-Two wires side-by-side held apart by insulating rods
        C:-Two wires twisted around each other in a spiral
        D:-Two wires side-by-side in a plastic ribbon
        Correct Answer:- Option-A

Question37:-In radio wave propagation, the Very High Frequency (VHF) range is
        A:-30 Hz − 300 Hz
        B:-300 KHz − 3000 KHz
        C:-30 MHz − 300 MHz
        D:-30 MHz − 3 GHz
        Correct Answer:- Option-C

Question38:-In the PAL color TV system, the color subcarrier frequency is ___________ way from the picture carrier.
        A:-38.9 MHz
        B:-33.4 MHz
        C:-5.5 MHz
        D:-4.433 MHz
        Correct Answer:- Option-D

Question39:-Antennas that transmit and receive radio waves in all directions equally known as
        A:-Bidirectional antenna
        B:-Omnidirectional antenna
        C:-Directional antenna
        D:-Yagi antenna
        Correct Answer:- Option-B

Question40:-What are the primary and secondary colors of TV ?
        A:-Red, green, blue, cyan, yellow, magenta
        B:-Red, yellow, blue, cyan, yellow, magenta
        C:-Red, green, blue, cyan, white, magenta
        D:-Red, yellow, blue, cyan, white, magenta
        Correct Answer:- Option-A

Question41:-In Radio frequency spectrum Very Low Frequency (VLF) band ranges from
        A:-3 − 30 Hz
        B:-3 − 30 kHz
        C:-3 − 30 MHz
        D:-30 MHz − 3 GHz
        Correct Answer:- Option-B

Question42:-Which of the following mode of propagation is known as ionospheric propagation ?
        A:-Sky wave propagation
        B:-Ground wave propagation
        C:-Space wave propagation
        D:-Surface wave propagation
        Correct Answer:- Option-A

Question43:-Line of sight propagation is
        A:-Surface wave propagation
        B:-Sky wave propagation
        C:-Space wave propagation
        D:-Ground wave propagation
        Correct Answer:- Option-C

Question44:-Which characteristics changes in frequency modulation ?
        A:-Carrier wave frequency
        B:-Modulating wave frequency
        C:-Carrier wave amplitude
        D:-Carrier wave phase
        Correct Answer:- Option-A

Question45:-What is the band width of AM if carrier frequency is 500 kHz and modulating frequency is 10 kHz ?
        A:-5 kHz
        B:-10 kHz
        C:-20 kHz
        D:-100 kHz
        Correct Answer:- Option-C

Question46:-For 100% AM modulation calculate the power transmitted by carrier signal if total power is 3000 W ?
        A:-1000 W
        B:-2000 W
        C:-3000 W
        D:-5000 W
        Correct Answer:- Option-B

Question47:-Antenna gain is measured in
        A:-dB
        B:-Hz
        C:-Henry
        D:-Farad
        Correct Answer:- Option-A

Question48:-An Omnidirectional antenna is designed to provide ___________ radiation pattern.
        A:-0°
        B:-90°
        C:-180°
        D:-360°
        Correct Answer:- Option-D

Question49:-Which of the following antenna is used for radar antenna ?
        A:-Yagi uda antenna
        B:-Isotropic antenna
        C:-Patch antenna
        D:-Parabolic antenna
        Correct Answer:- Option-D

Question50:-According to Nyquist criteria of sampling theorem the sampling frequency is
        A:-Same as signal frequency
        B:-Twice the signal frequency
        C:-3 times of signal frequency
        D:-4 times of signal frequency
        Correct Answer:- Option-B

Question51:-Which of the following is not a digital modulation technique ?
        A:-ASK
        B:-FSK
        C:-PSK
        D:-FM
        Correct Answer:- Option-D

Question52:-DC component is present in ___________ type of encoding.
        A:-Polar encoding
        B:-Unipolar encoding
        C:-Bipolar encoding
        D:-Manchester encoding
        Correct Answer:- Option-B

Question53:-The geographical area under one base station with a single transmitter and a receiver is known as
        A:-Cell
        B:-Cluster
        C:-Cell site
        D:-Module
        Correct Answer:- Option-A

Question54:-Which wireless technology link is used for mobile phone data transfer ?
        A:-SIM
        B:-Barcode
        C:-Bluetooth
        D:-Multiplexer
        Correct Answer:- Option-C

Question55:-The band width used for TV transmission in India is
        A:-2 MHz
        B:-5 MHz
        C:-7 MHz
        D:-10 MHz
        Correct Answer:- Option-C

Question56:-What are the 3 primary colours used in colour television system ?
        A:-Red, Blue, Green
        B:-Red, Blue, Yellow
        C:-Red, Blue, Magenta
        D:-Red, Green, Yellow
        Correct Answer:- Option-A

Question57:-Which of the following type of UPS is known as double conversion UPS ?
        A:-OFF line UPS
        B:-ON line UPS
        C:-Line interactive UPS
        D:-Stand by UPS
        Correct Answer:- Option-B

Question58:-Which circuit is used in control section of SMPS to drive the switching transistor ?
        A:-Rectifier
        B:-Pulse width modulator
        C:-Filter
        D:-Multiplexer
        Correct Answer:- Option-B

Question59:-Which of the following is an example of e-governance project ?
        A:-Online tax filing and payment
        B:-Hospital bill payment
        C:-Construction of public park
        D:-Building a new highway
        Correct Answer:- Option-A

Question60:-According to which section, No person shall possess wireless telegraphy apparatus without license issued under Indian telegraph act ?
        A:-Section 3
        B:-Section 4
        C:-Section 5
        D:-Section 7
        Correct Answer:- Option-B

Question61:-What is the formula for dynamically induced emf ?
        A:-BLV volts
        B:-BL sinθ volts
        C:-BLV sinθ volts
        D:-BLV cosθ volts
        Correct Answer:- Option-C

Question62:-What is the purpose of ELCB ?
        A:-Detects the fault in circuit
        B:-Monitors the residual current
        C:-Protects the equipment from over load
        D:-Protects from short circuit fault
        Correct Answer:- Option-B

Question63:-What is the power factor in a 3 phase power measurement of two wattmeters showing equal reading ?
        A:-0
        B:-1
        C:-0.5
        D:-0.8
        Correct Answer:- Option-B

Question64:-Calculate the percentage slip in a 3 phase induction motor having 6 poles with a frequency of 50 Hertz rotating with actual speed of 960 rpm.
        A:-2%
        B:-3%
        C:-4%
        D:-5%
        Correct Answer:- Option-C

Question65:-In a 3 phase system, if the active power is 4 kW and the apparent power is 5 KVA, calculate the reactive power.
        A:-1 KVAR
        B:-2 KVAR
        C:-3 KVAR
        D:-4 KVAR
        Correct Answer:- Option-C

Question66:-Which type of DC Generator works in absence of residual magnetism ?
        A:-Shunt generator
        B:-Series generator
        C:-Compound generator
        D:-Separately excited generator
        Correct Answer:- Option-D

Question67:-Calculate the line current of the 3 phase 415 V 50 Hz supply for the balanced load of 3000 Watt at 0.8 power factor is connected in star.
        A:-8.5 A
        B:-5.2 A
        C:-4.5 A
        D:-3.4 A
        Correct Answer:- Option-B

Question68:-What is the rotor frequency of a 3 phase squirrel cage induction motor at the time of starting ?
        A:-Equal to supply frequency
        B:-3 times less than supply frequency
        C:-3 times more than supply frequency
        D:- times less than supply frequency
        Correct Answer:- Option-A

Question69:-Which electrical quantity affects the heat generated in a conductor ?
        A:-Voltage
        B:-Square of the current
        C:-Square of the resistance
        D:-Current passed through it
        Correct Answer:- Option-B

Question70:-Calculate the voltage regulation in percentage of the transformer if the no load voltage is 240 volt and full load voltage is 220 volt.
        A:-7.2%
        B:-8.3%
        C:-8.71%
        D:-9.09%
        Correct Answer:- Option-D

Question71:-What is the maximum value of voltage for 240 volt RMS ?
        A:-240 V
        B:-415 V
        C:-339.5 V
        D:-376.8 V
        Correct Answer:- Option-C

Question72:-Which is the application of DC series MCB ?
        A:-AC motor
        B:-DC motor
        C:-Locomotives
        D:-Air conditioners
        Correct Answer:- Option-C

Question73:-What is the effect on surrounding metal placed in a magnetic field ?
        A:-Hysteresis
        B:-Skin effect
        C:-Eddy current
        D:-Dielectric stress
        Correct Answer:- Option-C

Question74:-What is the unit of luminous efficiency ?
        A:-Lux
        B:-Lumen
        C:-Lumen/
        D:-Lumen/watt
        Correct Answer:- Option-D

Question75:-What is the effect of the parallel circuit with one branch opened ?
        A:-Current will remain same
        B:-Whole circuit will not function
        C:-No current will flow in that branch
        D:-Voltage drop increase in the opened branch
        Correct Answer:- Option-C

Question76:-Which resistor the lowest current flows in a parallel circuit having the values of 50 Ω, 220 Ω, 450 Ω and 560 Ω connected with supply ?
        A:-50 Ω
        B:-220 Ω
        C:-450 Ω
        D:-560 Ω
        Correct Answer:- Option-D

Question77:-Which position MB type high pressure mercury vapour lamps are operated ?
        A:-Vertical
        B:-Inclined
        C:-Horizontal
        D:-Any position
        Correct Answer:- Option-D

Question78:-Which factor affects the polarity of the electromagnet ?
        A:-Length of the coil
        B:-Direction of current
        C:-Strength of current
        D:-Strength of the magnetic field
        Correct Answer:- Option-B

Question79:-Which power loss is assessed by open-circuit test on transformer ?
        A:-Hysteresis loss only
        B:-Eddy current loss only
        C:-Copper loss
        D:-Core loss
        Correct Answer:- Option-D

Question80:-Which type of resistor is used for Arc quenching protection in circuit breakers ?
        A:-Varistors
        B:-Sensistors
        C:-Thermistors
        D:-Light Dependent Resistor (LDR)
        Correct Answer:- Option-A

Question81:-Which of the following statements are true ?
 i. First Generation computers used Valves.
ii. Second Generation computers used vacuum tubes.
iii. Third Generation computers used ICs.
iv. Fourth generation computers use microprocessors.
        A:-i only
        B:-i and ii only
        C:- i, ii and iii only
        D:-i, iii and iv only
        Correct Answer:- Option-D

Question82:-An Operating System do
 i. Process Management
ii. Process Synchronization
iii. Memory Management
iv. CPU Scheduling
        A:-i, ii, iii and iv
        B:-ii and iv only
        C:-i, ii and iii only
        D:-i, ii and iv only
        Correct Answer:- Option-A

Question83:-Which is the technology of electronically extracting data from marked fields such as checkboxes or bubbles from pre-printed forms ?
        A:-OCR
        B:-MICR
        C:-OMR
        D:-BCR
        Correct Answer:- Option-C

Question84:-Linux was first released in
        A:-1993
        B:-1990
        C:-1992
        D:-1991
        Correct Answer:- Option-D

Question85:-In the following VDUs, which are considered as emissive display ?
 i. LED
ii. LCD
iii. Flat CRT
iv. Plasma panel
        A:-ii only
        B:-i, ii and iii only
        C:-i, ii and iv only
        D:-i, iii and iv only
        Correct Answer:- Option-D

Question86:-With the number of cores increased, then
 i. Price increases
ii. The multitasking capability of the CPU increases
iii. The speed increases
iv. Processing time increases
        A:-iv only
        B:-i, ii and iii only
        C:-i, ii and iv only
        D:-i, iii and iv only
        Correct Answer:- Option-B

Question87:-DHCP stands for
        A:-Dynamic Host Control Protocol
        B:-Dynamic Host Connection Protocol
        C:-Dynamic Host Configuration Protocol
        D:-Dynamic Hub Control Protocol
        Correct Answer:- Option-C

Question88:-In MS Word which of the following are types of SmartArt graphic ?
 i. Cycle
ii. Hierarchy
iii. Process
iv. Stock
        A:-All of them
        B:-Except iv
        C:-Except iii
        D:-Except ii
        Correct Answer:- Option-B

Question89:-Which twisted pair cable contains only two pairs (4 wires) ?
        A:-Cat 1
        B:-Cat 2
        C:-Cat 3
        D:-Cat 4
        Correct Answer:- Option-A

Question90:-Which protocol specifies the way the web browser and the web server communicates ?
        A:-FTP
        B:-HTTP
        C:-SMTP
        D:-TCP
        Correct Answer:- Option-B

Question91:-According to ROM, which of the following statements are true ?
 i. ROM is a Programmable Logic Device
ii. ROM stands for Read Only Memory
iii. ROM is the primary memory unit of a computer
iv. We can only read the programs and data stored on it
        A:-ii, iii, iv only
        B:-ii and iv only
        C:-i, ii and iii only
        D:-i, ii, iii and iv
        Correct Answer:- Option-D

Question92:-In MS Word, under Auto fit behaviour you can't choose
        A:-AutoFit Rows
        B:-AutoFit Contents
        C:-AutoFit Window
        D:-Fixed Column Width
        Correct Answer:- Option-A

Question93:-Bluetooth follows the principle of transmitting and receiving data using
        A:-Radio Waves
        B:-Micro Waves
        C:-Infrared Waves
        D:-Ultra Violet Waves
        Correct Answer:- Option-A

Question94:-Which of the following are intermediary devices ?
 i. Wireless Access Points
ii. Web Servers
iii. Workstations
iv. Security Firewalls
        A:-iii only
        B:-ii and iii only
        C:-i, ii and iv only
        D:-ii, iii and iv only
        Correct Answer:- Option-C

Question95:-According to a DVD, which of the following are true ?
 i. The recording or metal layer is situated on the top of the disk.
ii. There are double layers of pits in DVD.
iii. The data transfer rate is 11 MB/sec.
iv. The thickness of DVD is 0.6 mm.
        A:-i, ii and iii only
        B:-ii and iii only
        C:-i, ii and iv only
        D:-ii, iii and iv only
        Correct Answer:- Option-D

Question96:-Windows 10 introduced a feature, which is able to accept voice commands
        A:-File Explorer
        B:-Cortana
        C:-Disk Clean Up
        D:-Control panel
        Correct Answer:- Option-B

Question97:-Who created World Wide Web ?
        A:-Charles Babbage
        B:-Timothy John Berners Lee
        C:-Dennis Ritchie
        D:-Brenden Eich
        Correct Answer:- Option-B

Question98:-Which of the motherboard component controls the data connection to the BIOS ?
        A:-RAM
        B:-CPU
        C:-Northbridge
        D:-Southbridge
        Correct Answer:- Option-D

Question99:-In the following input devices, which are considered as pointing devices ?
 i. Scanner
ii. Mouse
iii. Joystick
iv. Keyboard
        A:-ii only
        B:-ii and iii only
        C:-i and iv only
        D:-ii, iii and iv only
        Correct Answer:- Option-B

Question100:-On the basis of principle of operation computers are classified as
 i. Micro Computers
ii. Analog Computers
iii. Digital Computers
iv. Hybrid Computers
        A:-i only
        B:-i and ii only
        C:-ii, iii and iv only
        D:-i, iii and iv only
        Correct Answer:- Option-C