Junior Instructor ( Electronic Mechanic)- Industrial Training - Question Paper and Answer Key

Exam Date :  20/07/2018
Question Alpha Code : A

1. What was the name of the horse of Shivaji ?
(A) Chetak
(B) Kanthaka
(C) Pancha Kalyani
(D) Bousephallus

2. Which animal is known as “Living Fossil” ?
(A) Beaver
(B) Legur
 (C) Tiger
 (D) Panda

3. Which of the following day observed as “World Asthama Day” in 2017 ?
 (A) June 23
 (B) May 2
 (C) December 18
 (D) October 13

4. Which blood group is without Antigen ?
 (A) B
 (B) A
 (C) O
 (D) AB

5. The study of flags is known as
 (A) Terttology
 (B) Rynology
 (C) Polmology
 (D) Vexillology

6. Which year Malayali Memorial submitted ?
 (A) 1891
 (B) 1896
 (C) 1897
 (D) 1900

7. Who was famous for woman activities of Kerala Mahila Desa Sevika Sangh ?
 (A) Lalitha Prabhu
 (B) Arya Pallam
 (C) A.V. Kuttimalu Amma
 (D) Anna Chandi

8. The World Alzheimer’s day is observed on
 (A) October 21
 (B) August 29
 (C) September 21
 (D) September 14

9. Savithrikutty Adava Vidava Vivaham is a
 (A) poem
 (B) novel
 (C) drama
 (D) critic

10. Who founded Satya Shodhak Samaj ?
 (A) Bhasker Rao Jadav
 (B) Gopal Deshmukh
 (C) Dayanand Saraswati
 (D) Jyotiba Phule 

11. Who is known as “Grand Old man of India” ?
 (A) Bankim Chandra Chatterji
 (B) Dadabhai Naoroji
 (C) Ram Mohan Roy
 (D) Madan Mohan Malaviya

12. “It was a post dated cheque on a crashing bank” – the statement related to
 (A) Communal Award
 (B) Wavell Plan
 (C) Cripp’s Mission
 (D) Cabinet Mission Plan

13. The Viceroy who forward the proposal of August Offer in 1940 was
 (A) Lord Wellington
 (B) Lord Linlithgow
 (C) Lord Dufferin
 (D) Lord Mayo

14. Who was the founder of Khudai Khitmadgar Organisation ?
 (A) Shaukat Ali Ansari
 (B) Khan Abdul Qayyum Khan
 (C) Muhammed Ali Jinnah
 (D) Khan Abdul Gaffar Khan

15. The first secretary of S.N.D.P. Yogam :
 (A) Kumrranasan
 (B) Dr. Palpu
 (C) Sree Narayana Guru
 (D) Vellappilly Nadesan

16. The Perinad ryot happened in
 (A) 1911
 (B) 1915
 (C) 1913
 (D) 1904

17. Baba Amte related to
 (A) Narmada Bachao Andolan
 (B) Chipko Movement
 (C) Bishnoi Movement
 (D) Garhwal Himalayas

18. Who wrote the book “Silent Spring” ?
 (A) Robert Redford
 (B) Ralph Nader
 (C) Sunderlal Bahuguna
 (D) Rachel Carson

19. What is the name of the Atom bomb laid in Nagasaki on August 9th 1945 ?
 (A) Litty boy
 (B) Fatty man
 (C) Little boy
 (D) Fat man

20. Which day is observed as Zero Emissions Day ?
 (A) 21st September
 (B) 8th June
 (C) 12th November
 (D) 11th July

21. A resistor with colour coded value of 1000 ohms and ± 20% tolerance can have an actual resistance between
 (A) 980 Ohm and 1020 Ohm
 (B) 800 Ohm and 1000 Ohm
 (C) 1000 Ohm and 1200 Ohm
 (D) 800 Ohm and 1200 Ohm

22. For a carbon-composition resistor colour coded with Yellow, Violet, Orange and Silver stripes left to right, the resistance and tolerance are
 (A) 470 Ohms ± 5%
 (B) 47 Kilo Ohm ± 10%
 (C) 47 Mega Ohms ± 5%
 (D) 4700 Ohms ± 10%

23. Five Capacitors each of 5 mF are connected in parallel, the equivalent capacitance will be
 (A) 25 mF
 (B) 15 mF
 (C) 1 mF
 (D) 10 mF

24. The resistance of a conductor of diameter D and length L is R W. If the diameter of the conductor is halved and its length is doubled, the resistance will be
 (A) R W
 (B) 2R W
 (C) 4R W
 (D) 8R W

25. The electrical energy consumed by a coil is stored in the form of :
 (A) An electrical field
 (B) A force field
 (C) An electrostatic field
 (D) A magnetic field

26. In a purely inductive circuit
 (A) Current leads voltage by 90°
 (B) Voltage lags current by 90°
 (C) Voltage leads current by 90°
 (D) Voltage and Current are in Phase (0°)

27. A semiconductor has ______ Valence Electrons.
 (A) 5
 (B) 6
 (C) 4
 (D) 3

28. The strength of a semiconductor crystal comes from ______.
 (A) Forces between Protons
 (B) Forces between Nuclei
 (C) Electron-Pair Bonds
 (D) None of the above

29. If Doping level of a crystal diode is increased, the breakdown voltage ______.
 (A) is increased
 (B) is decreased
 (C) remains the same
 (D) None of the above

30. A Zener diode has ______.
 (A) One PN Junction
 (B) Two PN Junction
 (C) Three PN Junction
 (D) Four PN Junction

31. Fermi level for extrinsic semiconductor depends on
 (A) Donor Element
 (B) Impurity Concentration
 (C) Temperature
 (D) All of the above

32. What is the maximum power rating for light emitting diodes ?
 (A) 150 mW
 (B) 300 mW
 (C) 500 mW
 (D) 5 mW

33. A Transistor is a ______ operated device.
 (A) Voltage
 (B) Current
 (C) Both Voltage and Current
 (D) None of the above

34. The Operation of JFET involves
 (A) Flow of minority Carriers
 (B) Flow of majority Carriers
 (C) Recombination
 (D) None of the above

35. When transistors are used in digital circuits they usually operate in the :
 (A) Active Region
 (B) Saturation and Cutoff Regions
 (C) Breakdown Region
 (D) Linear Region

36. If a 2 mV signal produces a 2V output, what is the Voltage Gain ?
 (A) 0.001
 (B) 100
 (C) 1000
 (D) 0.004

37. Least Distortion in the Output of a Power amplifier occurs in
 (A) Class A
 (B) Class B
 (C) Class AB
 (D) Class C

38. In a Class C Amplifier
 (A) Efficiency and distortion both are maximum.
 (B) Efficiency and distortion both are minimum.
 (C) Efficiency maximum but distortion minimum.
 (D) Efficiency minimum but distortion maximum.

39. The Cut in Voltage of a Germanium junction diode is
 (A) 0.1V
 (B) 0.3V
 (C) 0.7V
 (D) 1V

40. Which among the following does not belong to the category of LC oscillator ?
 (A) Hartley oscillator
 (B) Colpitt’s oscillator
 (C) Wein bridge oscillator
 (D) Clapp oscillator

41. Why is the practical value of | Ab | considered to be slightly greater than one in oscillators ?
 (A) To compensate for non-linearities existing in the circuit.
 (B) To compensate for phase shifting of two relevant signals upto 180°.
 (C) To compensate for the change in feedback voltage.
 (D) To compensate for noise voltage.

42. The RC network of a Wien Bridge Oscillator consists of R1=R2=10 KW and C1=C2=1000nF. The frequency of oscillation is :
 (A) 15.9 Hz
 (B) 159.12 Hz
 (C) 180 Hz
 (D) 15915 Hz

43. Which of the following oscillator will give most stable output oscillation frequency ?
 (A) Colpitts oscillator
 (B) Hartley oscillator
 (C) Crystal oscillator
 (D) RC phase shift oscillator

44. Which Number System has a base of 16 ?
 (A) Hexadecimal
 (B) Octal
 (C) Decimal
 (D) Binary

45. Which of these sets of Logic Gates are designated as Universal Gates ?

46. In a 1 to 4 De multiplexer, how many select inputs lines are required ?
 (A) 2
 (B) 3
 (C) 4
 (D) 5

47. The Decimal equivalent of (110011.110)2 is
 (A) 25.375
 (B) 25.175
 (C) 25.250
 (D) 25.750

48. The Gray code representation of 15 is
 (A) 1001
 (B) 1000
 (C) 1100
 (D) None of the above

49. Which of the following expressions is in the Sum-Of-Products (SOP) form ?
 (A) (A + B)(C + D)
 (B) (A)B(CD)
 (C) AB + CD
 (D) All

50. The Terminal count of a modulus-10 binary counter is
 (A) 1010
 (B) 1001
 (C) 1000
 (D) 1011

51. A simple Flip-Flop is
 (A) 1 Bit Memory
 (B) 2 Bit Memory
 (C) 3 Bit Memory
 (D) None of the above

52. Which of the following is not a weighted code ?
 (A) BCD
 (C) 8421
 (D) 6421

53. A Karnaugh map (K-map) with 4 Variables has ________ cells.
 (A) 2
 (B) 8
 (C) 16
 (D) 32

54. A counter is a :
 (A) Sequential Circuit
 (B) Combinational Circuit
 (C) Both Combinational and Sequential Circuit
 (D) None of the above

55. Which one of the following Logic Family IC is fastest ?
 (A) TTL
 (B) ECL
 (C) DTL

56. In D flip-flop, ____ after the propagation delay.
 (A) Input Follows Input
 (B) Output Follows Output
 (C) Output Follows Input
 (D) Input Follows Output

57. The Op-Amp can Amplify
 (A) A.C. Signals only
 (B) D.C. Signals only
 (C) Both A.C. and D.C. Signals
 (D) Neither D.C. nor A.C. Signals

58. Ans: A

59. Differential Amplifiers are used in
 (A) Buffers
 (B) Voltage Followers
 (C) Voltage Regulators
 (D) Instrumentation Amplifiers

60. What would be a typical value for the unity-gain bandwidth of a 741 Operational Amplifier ?
 (A) 103
 (B) 104
 (C) 105
 (D) 106

61. The Open-Loop Gain of an Op-Amp is 105. An Input Signal of 1mV is applied to the Inverting input with the Non-Inverting connected to the ground. The Supply Voltage is ± 10V. The Output of the Amplifier will be close to :
 (A) + 100V
 (B) – 100V
 (C) + 10V
 (D) – 10V

62. Which of the following is Hardware Interrupts ?
 (A) RST5.5, RST6.5, RST7.5
 (D) All of the above

63. Which Stack is used in 8085 ?
 (D) None of the above

64. What is mean by ALU ?
 (A) Arithmetic Logic Upgrade
 (B) Arithmetic Logic Unsigned
 (C) Arithmetic Logic Signed
 (D) Arithmetic Logic Unit

65. The 8051 Microcontroller is of ______ Pin Package and a ______ Processor.
 (A) 30, 1 byte
 (B) 20, 1 Byte
 (C) 40, 8 Bit
 (D) 40, 8 Byte

66. What is the function of Watchdog Timer ?
 (A) The Watchdog Timer is an external timer that resets the system if the software fails to operate properly.
 (B) The Watchdog Timer is an internal timer that sets the system if the software fails to operate properly.
 (C) The Watchdog Timer is an internal timer that resets the system if the software fails to operate properly.
 (D) None of the above

67. Which of the following instruction perform as of indirect RAM to Accumulator ?
 (A) MOV A, Rn
 (B) MOV Rn, A
 (C) MOV @R1, A
 (D) MOV A, @R1

68. When the 8051 is reset and the EA line is low, the program counter points to the first program instruction in the :
 (A) Internal Code Memory
 (B) Internal Data Memory
 (C) External Code Memory
 (D) External Data Memory

69. An alternate function of port pin p3.0 (Rxd) in the 8051 is :
 (A) Serial Port Input
 (B) Serial Port Output
 (C) Memory Write Strobe
 (D) Memory Read Strobe

70. Clamper is also known as
 (A) Charger
 (B) Clipper
 (C) Rectifier
 (D) DC Restorer

71. Vestigial Type Modulation gives :
 (A) High SNR
 (B) Low Bandwidth
 (C) Wide Bandwidth
 (D) FM

72. Receiving Antenna for TV is normally
 (A) Loop Antenna
 (B) Parabolic Reflector
 (C) Yagi Antenna
 (D) Folded Dipole

73. Pre-emphasis is used to
 (A) Increase RF Power
 (B) Convert FM into PM
 (C) Improve SNR
 (D) Correct AM into AM VSB

74. Sensitivity of Microphone is determined by measuring the ______
 (A) Output voltage at a given sound pressure
 (B) Output current at a given sound pressure
 (C) Output voltage and current at a given sound pressure
 (D) None of the above

75. Basic Principles of producing moving pictures is based on :
 (A) Continuity
 (B) Illusion of Continuity
 (C) Both (A) and (B)
 (D) None of the above

76. Principle of VIDICON camera tube is based on
 (A) Photo Emission Effect
 (B) Photo Conduction Effect
 (C) Field Effect
 (D) Photo Voltaic Effect

77. A PIN Diode is frequently used as a
 (A) Peak Clipper
 (B) Harmonic Generator
 (C) Voltage Regulator
 (D) Switching Diode for frequencies up to GHZ range 

78. For proper working of a clamper, time constant of the circuit should be
 (A) Large
 (B) Small
 (C) Equal To Signal Time Period
 (D) Greater Than 5 Times Signal Time Period

79. A UJT has Rbb=10 KW and Rb2 = 4 KW. Its intrinsic standoff ratio is
 (A) 0.6
 (B) 0.4
 (C) 2.5
 (D) 5/3

80. The main purpose of modulation is to
 (A) Combine two waves of different frequencies
 (B) Achieve wave shaping of the carrier wave
 (C) Transmitting low frequency information over long distance efficiently
 (D) Produce side bands

81. In AM, the power content of the carrier is maximum when m equals to
 (A) 0
 (B) l
 (C) 0.8
 (D) 0.5

82. In the context of IC fabrication, metallisation means
 (A) Connecting metallic wires
 (B) Forming interconnecting conducting patterns
 (C) Covering with a metallic cap
 (D) All of the above

83. Commonly used ICs are ___________.
 (A) Thin Film
 (B) Monolithic
 (C) Hybrid
 (D) None of the above

84. An Audio Amplifier IC is an example of
 (A) Digital IC
 (B) Linear IC
 (C) Both (A) and (B)
 (D) None of the above

85. LM317 Voltage Regulator, what is the minimum value of voltage required between its input and output in order to supply power to an internal circuit ?
 (A) 1V
 (B) 3V
 (C) 5V
 (D) 10V

86. What is PSRR Value of an Ideal Op-Amp ?
 (A) 0
 (B) Unity
 (C) Infinite
 (D) Unpredictable

87. In PLL, the capture range is always _______the lock range.
 (A) Greater than
 (B) Less than
 (C) Equal to
 (D) None of the above

88. What is the nature of Radiation Pattern of an Isotropic Antenna ?
 (A) Dough-Nut
 (B) Elliptical
 (C) Hyperbolic
 (D) Spherical

89. Which among the following is not a disadvantage of Rhombic Antenna ?
 (A) Requirement of large space
 (B) Reduced transmission efficiency
 (C) Wastage of power in terminating resistor
 (D) Maximum radiated power along main axis

90. If an Antenna draws 12A current and radiates 4KW, then what will be its Radiation Resistance ?
 (A) 22.22 W
 (B) 27.77 W
 (C) 33.33 W
 (D) 39.77 W

91. The general arrangement of PLA is
 (A) AND/OR structure
 (B) OR/AND structure
 (C) NAND/NOR structure
 (D) EX-OR/OR structure

92. Serial access memory at the chip level is classed as memory that has
 (A) Shift Registers
 (B) Counters
 (C) Access time is independent of location of data
 (D) Internally stored data is used

93. The FPGA refers to
 (A) First Programmable Gate Array
 (B) First Program Gate Array
 (C) Field Program Guard Array
 (D) Field Programmable Gate Array

94. The Full Form of VLSI is
 (A) Very Large Scale Integration
 (B) Very Least Scale Integration
 (C) Very Long Single Integration
 (D) None of the above

95. VHDL is being used for
 (A) Documentation
 (B) Verification
 (C) Synthesis of Large Digital Design
 (D) None of the above

96. Which of the following has the capability to store the information permanently ?
 (A) RAM
 (B) ROM
 (C) Both RAM and ROM
 (D) None of the above

97. In a Computer, Registers are present
 (A) Within Control Unit
 (B) Within RAM
 (C) Within ROM
 (D) Within CPU

98. The capacity of a memory unit is
 (A) The number of binary input stored
 (B) The number of words stored
 (C) The number of bytes stored
 (D) None of the above

99. Speed of Data Transmission in 4-G Network of Telecom is
 (A) 386 Kbps - 2 Mbps
 (B) 2 Mbps
 (C) 100 Mbps - 1 Gbps
 (D) 2 Mbps - 1 Gbps

100. The sequence of operations in which Pulse Code Modulation is
 (A) Sampling, quantizing, encoding
 (B) Sampling, encoding quantizing,
 (C) Quantizing, sampling, encoding
 (D) None of the above

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