Electrician Objective Type Question Answer In English -14 (01-10)
1. What type of fuel is used in a hydro power plant?
(A) Molecular
(B) Biological
(C) Chemical
(D) none at all
Answer - (D)
2. Which of the following is the formula for finding kinetic induced EMF?
(A) e = BLV cosθ
(B) e = BLV sinθ
(C) e = BLT Sinθ
(D) e = BLV
Answer - (B)
3. When the value of the specific gravity of the electrolyte of the battery is less than what value should it stop working?
(A) 1.25
(B) 1.22
(C) 1.30
(D) 1.18
Answer - (D)
4. The speed control of a DC series motor is not done by which of the following methods?
(A) armature diverter
(B) Supply voltage control
(C) Field control
(D) Field taping
Answer - (C)
5. 1 joule / sec. Will be equal?
(A) 1 w
(B) 1 volt
(C) 1 ampere
(D) 1 new meter
Answer - (A)
6. If the length of a 20 ohm resistance wire is increased by four times and the cross section area is reduced to half its new resistance?
(A) 80 ohms
(B) 40 ohms
(C) 160 ohm
(D) 20 ohms
Answer - (C)
7. What is the internal resistance of a nickel iron cell with internal resistance of a lead acid cell?
(A) equal
(B) less
(C) very few
(D) more
Answer - (D)
8. What is the material used between the commutator segments?
(A) Lead
(B) Bakelite
(C) Mica
(D) None of these
Answer - (C)
9. Which generator is recommended to supply long distance load?
(A) DC shunt
(B) Level Compound
(C) Over compound
(D) Flat Compound
Answer - (C)
10. By which equation can the back EMF obtained from a DC motor be determined?
(A) Eb = V - Ia.Ra
(B) Eb = V + Ia.Ra
(C) Eb = V × Ia.Ra
(D) Eb = I2 - Ia.Ra
Answer - (A)
Electrician Objective Type Question Answer In English -14 (11-20)
11. Whose position changes in the distortion effect of the armature reaction?
(A) Magnetically neutral axis
(B) Geometric neutral axis
(C) Pole
(D) the magnetic field of the armature
Answer - (A)
12. What is the method of charging the battery over a large current in a short time?
(A) trickle charging
(B) Steady current charging
(C) boost charging
(D) constant voltage charging
Answer - (C)
13. The resistance of a conductor is of its length?
(A) in direct proportion
(B) directly in inverse proportion
(C) parallel
(D) equal
Answer - (A)
14. DC motor speed does not depend on which of the following factors?
(A) Back to EMF
(B) on load
(C) at the value of flux
(D) on the commutator
Answer - (D)
15. What should be the minimum distance between two earthing points?
(A) 1.5 m
(B) 5 m
(C) 2 m
(D) 1.3 m
Answer - (B)
16. The core is kept to reduce the value of eddy current?
(A) thick
(B) Large area
(C) laminated
(D) short circuit
Answer - (C)
17. How many volts of carbon graphite brush does the voltage drop?
(A) 10 volts
(B) 0.5 volt
(C) 1 volt
(D) 5 volts
Answer - (C)
18. What is the color of neutral wire?
(A) Black
(B) Yellow
(C) Red
(D) Green
Answer - (A)
19. Which of the following devices cannot use an electric magnet?
(A) In Bell
(B) Compass
(C) Relay
(D) in synchronous motor
Answer - (B)
20. Which means, if the generator's insulation is checked with a magger, its reading is zero?
(A) is earth
(B) the machine is fine
(C) Winding is open
(D) meter is bad
Answer - (A)