Q1:- If the size of the circuit copper conductor is 10 sq. mm, then the size of the earth conductor in G.I
wire should be :
(A) 1.5 sq. mm
(B) 2.5 sq. mm
(C) 5 sq. mm
(D) 10 sq. mm
(E) 15 sq. mm
ANSWER:-D
Q2:-The equivalent of 1" in metric is ___
(A) 2.54 mm
(B) 25.4 mm
(C) 25.44 mm
(D) 25.5 mm
(E) 254.4 mm
ANSWER:-B
Q3:-Soft connections are used to transform-
(A) Single phase supply into three phase supply
(B) Single phase supply into two phase supply
(C) Three phase supply into single phase supply
(D) Star connected primary into delta connected secondary
(E) None of these
ANSWER:-
Q4:-A DC generator works on the principle of:
(A) Faraday's laws of electrolysis
(B) Mutual induction
(C) Lenz's law
(D) Faraday's law of electro-magnetic induction
(E) Pascal's Law
ANSWER:-D
Q5:-Which of the following transformer is used for supplying general power and lighting?
(A) Substation transformer
(B) Power transformer
(C) General purpose transformer
(D) Distribution transformer
(E) None of these
ANSWER:-D
Q6:-How many light points can be allowed in one circuit?
(A) 5 points
(B) 15 points
(C) 20 points
(D) 30 points
(E) 10 points
ANSWER:-E
Q7:-The function of a Zener diode is to maintain a constant-
(A) Input voltage
(B) Output voltage
(C) Supply of current
(D) Output current irrespective of load resistance
(E) Input current
ANSWER:-B
Q8:-Which of the following has almost no change in resistance with temperature change?
(A) Nickel
(B) Nichrome
(C) Platinum
(D) Manganin
(E) Aluminium
ANSWER:-D
Q9:-Which conductors connects the consumer’s terminals to distribution?
(A) Service Mains
(B) Feeders
(C) Distributors
( D) Both (B) & C
(E) None of these
ANSWER:-A
Q10:-Which of the following fire extinguishers is suitable for a live electrical fire?
(A) Halon
(B) Water
(C) Foam
(D) Liquified chemical
(E) Sand
ANSWER:-A
Q11:- What are the advantage of the shaded pole motor?
(A) Low efficiency
(B) Low starting torque
(C) Very little overload capacity
(D) None of these
(E) All (A), (B), (C)
ANSWER:-E
Q12:- In which type of AC to DC converter, losses are less and efficiency is higher?
(A) M.G set
(B) Rotary converter
(C) Mercury arc rectifier
(D) Metal rectifier
(E) None of these
ANSWER:-D
Q13:- Which of the following is also called universal bias?
(A) Emitter bias
(B) Voltage divider bias
(C) Base bias
(D) Collector Bias
(E) None of these
ANSWER:-B
Q14:- A motor rated to run at 440 V is running on normal voltage. Suddenly the voltage is dropped to 340 V. The motor will -
(A) Stop immediately
(B) Heat up excessively
(C) Run in reverse direction
(D) Draw reduced current
(E) Stop, but start again
ANSWER:-B
Q15:- Where are Buchholz relays used?
(A) Transformers
(B) Thermocouples
(C) Circuit Breakers
(D) Thermostats
(E) All of these
ANSWER:-A
Q16:-. A material that is slightly repelled by a magnet is called _______.
(A) Magnetic
(B) Paramagnetic
(C) Diamagnetic
(D) Ferromagnetic
(E) Semi-magnetic
ANSWER:-C
Q17:-. What is the material used inside the breather to prevent moisture entering the transformer?
(A) Copper sulphate
(B) Sodium chloride
(C) Sodium silicate
(D) Silica gel
(E) Potassium Chloride
ANSWER:-D
Q18:- Overhead lines can be designed for operation upto:
(A) 11 KV
(B) 400 KV
(C) 66 KV
(D) 33 KV
(E) 22 KV
ANSWER:-B
Q19:-A wire has resistance 16 Ω. It is bent in the form of a circle. The effective resistance between the two points on any diameter of the circle is :
(A) 16Ω
(B) 32Ω
(C) 8Ω
(D) 4Ω
(E) 2Ω
ANSWER:-D
Q20:- The usual span with RCC poles are:
(A) 80-170 cm
(B) 60-100 cm
(C) 40-50 cm
(D) 300-500 cm
(E) 500-1000 cm
ANSWER:-A
wire should be :
(A) 1.5 sq. mm
(B) 2.5 sq. mm
(C) 5 sq. mm
(D) 10 sq. mm
(E) 15 sq. mm
ANSWER:-D
Q2:-The equivalent of 1" in metric is ___
(A) 2.54 mm
(B) 25.4 mm
(C) 25.44 mm
(D) 25.5 mm
(E) 254.4 mm
ANSWER:-B
Q3:-Soft connections are used to transform-
(A) Single phase supply into three phase supply
(B) Single phase supply into two phase supply
(C) Three phase supply into single phase supply
(D) Star connected primary into delta connected secondary
(E) None of these
ANSWER:-
Q4:-A DC generator works on the principle of:
(A) Faraday's laws of electrolysis
(B) Mutual induction
(C) Lenz's law
(D) Faraday's law of electro-magnetic induction
(E) Pascal's Law
ANSWER:-D
Q5:-Which of the following transformer is used for supplying general power and lighting?
(A) Substation transformer
(B) Power transformer
(C) General purpose transformer
(D) Distribution transformer
(E) None of these
ANSWER:-D
Q6:-How many light points can be allowed in one circuit?
(A) 5 points
(B) 15 points
(C) 20 points
(D) 30 points
(E) 10 points
ANSWER:-E
Q7:-The function of a Zener diode is to maintain a constant-
(A) Input voltage
(B) Output voltage
(C) Supply of current
(D) Output current irrespective of load resistance
(E) Input current
ANSWER:-B
Q8:-Which of the following has almost no change in resistance with temperature change?
(A) Nickel
(B) Nichrome
(C) Platinum
(D) Manganin
(E) Aluminium
ANSWER:-D
Q9:-Which conductors connects the consumer’s terminals to distribution?
(A) Service Mains
(B) Feeders
(C) Distributors
( D) Both (B) & C
(E) None of these
ANSWER:-A
Q10:-Which of the following fire extinguishers is suitable for a live electrical fire?
(A) Halon
(B) Water
(C) Foam
(D) Liquified chemical
(E) Sand
ANSWER:-A
Q11:- What are the advantage of the shaded pole motor?
(A) Low efficiency
(B) Low starting torque
(C) Very little overload capacity
(D) None of these
(E) All (A), (B), (C)
ANSWER:-E
Q12:- In which type of AC to DC converter, losses are less and efficiency is higher?
(A) M.G set
(B) Rotary converter
(C) Mercury arc rectifier
(D) Metal rectifier
(E) None of these
ANSWER:-D
Q13:- Which of the following is also called universal bias?
(A) Emitter bias
(B) Voltage divider bias
(C) Base bias
(D) Collector Bias
(E) None of these
ANSWER:-B
Q14:- A motor rated to run at 440 V is running on normal voltage. Suddenly the voltage is dropped to 340 V. The motor will -
(A) Stop immediately
(B) Heat up excessively
(C) Run in reverse direction
(D) Draw reduced current
(E) Stop, but start again
ANSWER:-B
Q15:- Where are Buchholz relays used?
(A) Transformers
(B) Thermocouples
(C) Circuit Breakers
(D) Thermostats
(E) All of these
ANSWER:-A
Q16:-. A material that is slightly repelled by a magnet is called _______.
(A) Magnetic
(B) Paramagnetic
(C) Diamagnetic
(D) Ferromagnetic
(E) Semi-magnetic
ANSWER:-C
Q17:-. What is the material used inside the breather to prevent moisture entering the transformer?
(A) Copper sulphate
(B) Sodium chloride
(C) Sodium silicate
(D) Silica gel
(E) Potassium Chloride
ANSWER:-D
Q18:- Overhead lines can be designed for operation upto:
(A) 11 KV
(B) 400 KV
(C) 66 KV
(D) 33 KV
(E) 22 KV
ANSWER:-B
Q19:-A wire has resistance 16 Ω. It is bent in the form of a circle. The effective resistance between the two points on any diameter of the circle is :
(A) 16Ω
(B) 32Ω
(C) 8Ω
(D) 4Ω
(E) 2Ω
ANSWER:-D
Q20:- The usual span with RCC poles are:
(A) 80-170 cm
(B) 60-100 cm
(C) 40-50 cm
(D) 300-500 cm
(E) 500-1000 cm
ANSWER:-A
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