1. The asbestos dielectric strength of mica is range?
(A) 30 to 50 KV / mm
(B) 20 to 60 KV / mm
(C) 10 to 16 KV / mm
(D) 12 to 17 KV / mm
Answer- (B)
2. What is the maximum safe temperature for class B conductors?
(A) 120 ℃
(B) 150 ℃
(C) 130 ℃
(D) 155 ℃
Answer - (C)
3. With which material are switch sockets etc. manufactured?
(A) Micanite
(B) Porcelin
(C) Bakelite
(D) asbestos
Answer - (C)
4. Is the switch used to control the power device from three or more locations?
(A) a pole
(B) two poles
(C) Intermediate
(D) ceiling switch
Answer - (C)
5. What is the ampere range of KitKat Fuse?
(A) 5 to 3000
(B) 15 to 1000
(C) 60 to 1000
(D) 2 to 60
Answer- (A)
6. Which of the following is an electrical chemical equivalent of silver?
(A) 0.18 mg / coulamb
(B) 1.18 mg / coulamb
(C) 1.1118 mg / coulamb
(D) 107.88 mg / coulamb
Answer- (B)
7. What is the relative density gauge?
(A) Pyrometer
(B) thermometer
(C) Hydrometer
(D) voltmeter
Answer - (C)
8. What is the relative density unit?
(A) kg / cm
(B) per ℃
(C) kg / m3
(D) does not exist
Answer- (D)
9. Which of the following is a suitable material to make permanent magnet?
(A) soft iron
(B) Silicon Steel
(C) Cobalt
(D) All of the above
Answer - (C)
10. is a unit of magneto motive force (MMF) ?
(A) Ampere Turn
(B) volts
(C) ampere / turn
(D) webber
Answer- (A)
11. What is Helix%Ñ%s law used to find?
(A) current direction
(B) Magnetic Field direction
(C) Polarity
(D) All of the above
Answer - (C)
12. Which of the following is a dia magnetic material?
(A) Nikil
(B) Iron
(C) Bismith
(D) Aluminum
Answer - (C)
13. Carbon has a temperature coefficient?
(A) NTC
(B) PTC
(C) Both of the above
(D) None of the above
Answer- (A)
14. Two resistors of 50-50 ohms are connected in series, adding in parallel will be the total resistance?
(A) 25 ohm
(B) 50 ohm
(C) 1 ohm
(D) 100 ohm
Answer- (A)
15. According to Kirchhoff%Ñ%s rules, is the circuit current at the junction ?
(A) equal to the total
(B) Sum of incoming stream
(C) zero
(D) All of the above
Answer - (C)
16. The resistance measuring instrument is?
(A) Wheat Stone Bridge
(B) Ohm meter
(C) voltmeter
(D) Both 1 and 2
Answer- (D)
17. Indian Standards Institute ISI was established?
(A) In 1969
(B) 1956
(C) 1955
(D) 1958
Answer- (B)
18. The Wheat Stone Bridge will have the value of P = 15 ohms and Q = 10 ohms and S = 25 ohms.
(A) 30 ohms
(B) 12 ohm
(C) 12.5 ohm
(D) None of these
Answer- (D)
19. Which of the following is a unit in the MKS system of work?
(A) kg meter
(B) Joule
(C) joules / second
(D) Newton meter
Answer- (D)
20. Which of the following is equal to 1 HP?
(A) 75 KG Meter
(B) 1 joule/second
(C) 75 kg m/s
(D) 746 joules
Answer - (C)