Question 1: In circuit breakers making capacity = _____________ X Symmetrical breaking capacity.
a. 2.97
b. 1.82
c. 2.55
d. 4.12
Answer: 2.55
Question 2: Calculate the rectification efficiency of half wave rectifier if input power to rectifier is 150 W and power obtained is 90 W.
a. 60%
b. 50%
c. 40%
d. 80%
Answer: 60%
Question 3: Which of the following are types of URL?.
a. Relative and Dynamic
b. Absolute and Relative
c. Static and Dynamic
d. Absolute and Dynamic
Answer: Absolute and Relative
Question 4: Which of the following represents the terminals of a MOSFET?
a. Drain, Collector and Gate
b. Drain, Collector and Base
c. Emitter, Collector and Base
d. Drain, Source and Gate
Answer: Drain, Source and Gate
Question 5: The insulation resistance of motors and other equipment can be expressed as:
a. (30 x rated phase to phase voltage)/(1000 + 2 x rated power)
b. (30 x rated phase to phase voltage)/(5000 + 2 x rated power)
c. (10 x rated phase to phase voltage)/(1000 + 2 x rated power)
d. (20 x rated phase to phase voltage)/(1000 + 2 x rated power)
Answer: (20 x rated phase to phase voltage)/(1000 + 2 x rated power)
Question 6: Danger boards should be at a height of _________ meters from ground.
a. 1
b. 4
c. 3
d. 2
Answer: 3
Question 7: Which of the following is ferromagnetic.
a. Oxygen
b. Cobalt
c. Glass
d. Rubber
Answer: Cobalt
Question 8: According to IS 4648:1968, ceiling fans should be hung at least the floor.
a. 6.75
b. 5.75
c. 3.75
d. 2.75
Answer: 2.75
Question 9: The 8086 is a ____________ bit integer processor.
a. 20 bit
b. 8 bit
c. 16 bit
d. 18 bit
Answer: 16 bit
Question 10: Dielectric loss is proportional to:
a. Frequency
b. (Frequency)2
c. (Frequency)3
d. (Frequency)1/2
Answer: Frequency
Question 11: Which of the following is the CORRECT full form of SCADA?
a. Super Control And Data Acquisition
b. Supervisory Computation And Data Acquisition
c. Supervisory Control And Data Acquisition
d. Stand Control And Data Acquisition
Answer: Supervisory Control And Data Acquisition
Question 12: A penstock is a constituent of a power plant.
a. Steam power plant
b. Nuclear power plant
c. Hydro power plant
d. Diesel power plant
Answer: Hydro power plant
Question 13: In a power sub-circuit, the maximum connected load is:
a. 6000 W
b. 12000 W
c. 3000 W
d. 9000 W
Answer: 3000 W
Question 14: CMOS generally stands for:
a. Super Control And Data Acquisition
a. Complex MOSFET
b. Conventional MOSFET
c. Commercial MOSFET
d. Complementary MOSFET
Answer: Complementary MOSFET
Question 15: Running cost of a power plant is minimum.
a. Diesel
b. Hydro
c. Steam
d. Nuclear
Answer: Hydro
Question 16: The resistance of an ideal conductor is ___________.
a. 1 ohm
b. infinite
c. 100 ohm
d. zero
Answer: Zero
Question 17: The pitch factor of full pitch alternator is:
a. 0.7
b. 0.5
c. 1
d. 0
Answer: 1
Question 18: The unit of electrostatic charge is:
a. Ampere.second
b. Coulomb/second
c. Ampere
d. Ampere/second
Answer: Ampere.second
Question 19: The given truth table is for a(n) gate.
a. OR gate
b. AND gate
c. XOR gate
d. XNOR gate
Answer: AND gate
Question 20: Which of the following does NOT represents a component of SCADA system?
a. PLC
b. Sparger controller
c. Human-machine interface
d. RTU
Answer: Sparger controller
Question 21: Which of the following is a sign of danger associated with overhead installations?
Answer: C
Question 22: The given image is the symbol of :
a. DIAC
b. BJT
c. TRIAC
d. SCR
Answer: TRIAC
Question 23: The Curie of temperature of Nickle (in Kelvin) is:
a. 543
b. 987
c. 324
d. 627
Answer: 627
Question 24: The potential difference between the feet of a person standing in a sub station with one step during the flow of earth fault current is called :
a. magnetic potential
b. step potential
c. touch potential
d. capacitive potential
Answer: Step Potential
Question 25: For a two bus system, which of the following conditions should follow loss coefficient?
a. B12 =0.002, B21= -0.006
b. B12 =0.002, B21= 0.002
c. B12 = -0.002, B21= 0.002
d. B12 =0.006, B21= 0.002
Answer: b. B12 =0.002, B21= 0.002
Question 26: Calculate the power of a lamp if it consumes 500 J in 20 seconds.
a. 15 W
b. 25 W
c. 20 W
d. 50 W
Answer: b. 25 W
Question 27: Which of the following is used for switching and lightning surge protection?
a. Surge arrestor
b. Insulator
c. Circuit breaker
d. Relay
Answer: Surge Arrestor
Question 28: The scale of a Megger is generally ranges from _________.
a. (0 – 1000) Ω
b. (0 – 10000) Ω
c. (0 – 100) Ω
d. (0 – infinity) Ω
Answer: d. (0 – infinity) Ω
Question 29: When a bulb of 50W is connected across 200V, the energy consumed in 1 minute is ____________ Watt-sec.
a. 3000
b. 500
c. 300
d. 50
Answer: a. 3000
Question 30: A capacitive divider of ratio C2 : C1 = 149 : 1 is used to measure high voltage. If the Voltage measured across C2 is 10 V then the voltage across C1 (neglect the resistance) is:
a. 1.49kV
b. 10 kV
c. 2.12 kV
d. 15 kV
Answer: a. 1.49kV
Question 31: The decimal equivalent of octal number (145)8 is:.
a. (101)10
b. (165)10
c. (196)10
d. (353)10
Answer: a. (101)10
Question 32: Which one of the following statements is not related in case of an electric shock?.
a. give the unconscious person anything to eat or drink
b. unplug the supply
c. do not leave the unconscious person alone
d. protect yourself and pull the victim
Answer: a. give the unconscious person anything to eat or drink
Question 33: The average resistance of a human body is about:
a. 150000 Ω
b. 100000 Ω
c. 50000 Ω
d. 1000 Ω
Answer: d. 1000 Ω
Question 34: The fusing factor of a standard duty cartridge’s fuse is:
a. 1.45
b. 3.45
c. 0.45
d. 2.45
Answer: a. 1.45
Question 35: The given figure is an example of a ______ crystal.
a. Face centered cubic crystal
b. Simple monoclinic crystal
c. Body-Centered cubic crystal
d. Simple cubic crystal
Answer: c. Body-Centered cubic crystal
Question 36:Which of the following is not a anti-virus software?
a. Kaspersky
b. Norton
c. Quick heal
d. Trojan
Answer: d. Trojan
Question 37: Which of the following is the CORRECT HTML tag for the smallest size heading?
a. <h6>
b. <h1>
c. <h3>
d. <head>
Answer: a. <h6>
Question 38: CPU stands for:
a. Central programming Unit
b. Command Programming Unit
c. Central processing Unit
d. Command Processing Unit
Answer: c. Central processing Unit
Question 39: If voltage across each disk insulator in a string is equal then calculate the string efficiency of the string.
a. 90%
b. 50%
c. 100%
d. 75%
Answer: c. 100%
Question 40: Which of the following is used in the brush of DC motor?
a. Copper
b. Iron
c. Carbon
d. Aluminum
Answer: c. Carbon
Question 41: The command to copy in Microsoft Word in computer is:
a. Ctrl + V
b. Ctrl + F
c. Ctrl + C
d. Ctrl + X
Answer: c. Ctrl + C
Question 42: Determine the damping ratio of the given transfer function. C(s) = 4/(s + 19)(s + 4)
a. 9/12
b. 1
c. 13/12
d. 12/13
Answer: c. 13/12
Question 43: Which of the following is the CORRECT statement with respect to energy?
a. Energy can be destroyed
b. Energy can be stored
c. Energy can be created
d. Energy can be transformed one form to another
Answer: d. Energy can be transformed one form to another
Question 44: Carbon zinc cells is also known as:
a. Leclanche cell
b. Lead acid
c. Mercury cell
d. Alkaline cell
Answer: a. Leclanche cell
Question 45: Which of the following relation is TRUE for progressive winding of a DC machine?
a. YF = YB – 2
b. YF = YB + 1
c. YF = YB – 1
d. YF = YB + 2
Answer: a. YF = YB – 2
Question 46: A wire-gauge is used to measure :
a. Thickness of insulation of a wire
b. Length of a wire
c. Diameter of a wire
d. Resistance of a wire
Answer: c. Diameter of a wire
Question 47: In a hydroelectric power plant, which of the following is used to discharge surplus water on the downstream side of the dam?
a. Penstock
b. Surge tank
c. Condenser
d. Spillways
Answer: d. Spillways
Question 48: A moving coil instrument gives full scale deflection of 6mA when there is a potential difference of 60mV across the terminal. Calculate the series resistance for a full scale reading of 600mV.
a. 100 Ω
b. 1000 Ω
c. 90 Ω
d. 9 Ω
Answer: c. 90 Ω
Question 49: A tuned amplifier has resonant frequency 1000 kHz and bandwidth is 25 kHz. The quality (Q) factor of this amplifier is :
a. 40
b. 975
c. 1/40
d. 25000
Answer: a. 40
Question 50: There are some liquids in which a passage of electric current is accompanied by chemical changes. This effect is known as the ________ effect of electric current. :
a. thermal
b. mechanical
c. chemical
d. physical
Answer: c. chemical
Question 51: As per occupational hazards mechanical hazard is:
a. open wire
b. unguarded machinery
c. short circuit
d. current leakage
Answer: b. unguarded machinery
Question 52: Calculate the transfer function of the system shown in the given figure
a. G/(1 + 2G)
b. G/(1 – 2G)
c. 2G/(1 + 2G)
d. 2G/(1 – 2G)
Answer: b. G/(1 – 2G)
Question 53: A vacuum circuit breaker can be used in which voltage range
a. 11-33 kV
b. 22-66 kV
c. 22-33 kV
d. 11-66 kV
Answer: a. 11-33 kV
Question 54: MHSCP stands for:
a. Minimum hemi spherical continuous power
b. Minimum hemi spherical candlepower
c. Mean hemi spherical candle power
d. Mean horizontal spherical candle power
Answer: c. Mean hemi spherical candle power
Question 55: Short circuit test of transformer gives the information of:
a. copper loss
b. hysteresis loss
c. iron loss
d. eddy current loss
Answer: a. copper loss
Question 56: Calculate the slip of 4 pole induction motor if speed is 1450 rpm and supply frequency is 50 Hz.
a. 0.033
b. 0.05
c. 0.067
d. 0.015
Answer: a. 0.033
Question 57: Which of the following is a protective device?
a. Insulator
b. Fuse
c. Relay
d. Synchronous condenser
Answer: b. Fuse
Question 58: The simplified version of the expression X= (A + B).(A + C) is:
a. A + AB
b. A + BC
c. AB + BC + CA
d. B + AC
Answer: b. A + BC
Question 59: Which of the following is a semiconductor?
a. Neon
b. Carbon
c. Gold
d. Silicon
Answer: d. Silicon
Question 60: NaCl is:
a. Hexagonal crystal structure
b. Tetragonal crystal structure
c. Orthorhombic crystal structure
d. Cubic crystal structure
Answer: d. Cubic crystal structure
Question 61: Which of the following is the symbol of an isolator generally used in a sing line diagram?
Answer: d.
Question 62: Medium level language is:
a. Python
b. Java
c. C
d. C++
Answer: c. C & d. C++
Question 63: The closed loop gain of the given amplifier for R1 = 5.5 kΩ and R2 = 3.3 kΩ is:
a. 0.60
b. 2.66
c. 1.60
d. 1.00
Answer: c. 1.60
Question 64: If a signal has a time period of 25 msec, then calculate the frequency of the signal.
a. 25Hz
b. 50Hz
c. 60Hz
d. 40Hz
Answer: d. 40Hz
Question 65: Aluminum is a ____________ material.
a. Ferromagnetic
b. Ferrimagenetic
c. Diamagenetic
d. Parammagenetic
Answer: d. Parammagenetic
Question 66: Which of the following power plant required the highest capital cost?
a. Hydro power plant
b. Steam power plant
c. Nuclear power plant
d. Diesel power plant
Answer: a. Hydro power plant
Question 67: 2’s complement of the binary number (1010101)2 is :
a. (1110011)2
b. (1101010)2
c. (0101010)2
d. (0101011)2
Answer: d. (0101011)2
Question 68: The example of macro virus is
a. Michelangelo
b. CoolWebSearch
c. Zango
d. Wazzo
Answer: d. Wazzo
Question 69: 1 GB is equal to:
a. 256 MB
b. 1000 MB
c. 1024 MB
d. 100 MB
Answer: c. 1024 MB
Question 70: At a unity factor, the armature reaction of an alternator is:
a. Demagnetizing
b. Magnetizing
c. Distorting
d. Partly distorting
Answer: c. Distorting
Question 69: A/An _____________ cell is a type of secondary cell.
a. lead acid cell
b. Alkaline cell
c. silver oxide cell
d. Mercury cell
Answer: a. lead acid cell
Question 69: As per safety norms, which of the following condition should be fulfill for the selection of CORRECT capacity fuse?
a. Allow excess current flow
b. Protect fuse instead of equipment
c. Man and machine endangers
d. Protect equipment against overcurrent
Answer: d. Protect equipment against overcurrent
Question 70: At a unity factor, the armature reaction of an alternator is:
a. Demagnetizing
b. Magnetizing
c. Distorting
d. Partly distorting
Answer: c. Distorting
Question 71: To avoid a break in a circuit due to one lamp failure, which lighting circuit should be chosen in house wiring?
a. Parallel
b. A part of the circuit connected in series and rest of the part connected parallel
c. series
d. Both series and Parallel
Answer: a. Parallel
Question 72: Which of the following represents the Correct Boolean representation of the given PLC Program?
a. C(AB + D)
b. D(AB + C)
c. ABC + D
d. D(AC + B)
Answer: a. C(AB + D)
Question 73: A black body always emits maximum energy in the visible spectrum when heated to:
a. 3520 °C
b. 5520 °C
c. 6520 °C
d. 4520 °C
Answer: c. 6520 °C
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