Electrician Objective Type Question Answer In English -13 (01-10)
1. 5 cells of 2.2 ohms will have total emf in parallel?
(A) 5 volts
(B) 11 volts
(C) 22 volts
(D) None of these
Answer - (D)
2. After checking the charging state of the lead acid battery with the hydrometer, the hydrometer is completely immersed in the float electrolyte, this shows
(A) is full charged
(B) is semi charged
(C) is discharged
(D) is dead
Answer - (D)
3. Brush holders are made
(A) Bakelite
(B) Carbon
(C) Brass
(D) Cast steel
Answer - (C)
4. Which of the following generators provides emf immediately?
(A) Permanent magnetic
(B) Series
(C) Shunt
(D) Compound
Answer - (A)
5. What are the losses under stray losses?
(A) Iron + Copper
(B) shunt field + iron + mechanical
(C) Mechanical + Iron
(D) Series field + armature
Answer - (C)
6.What is the direction of electric current?
(A) negative to positive
(B) positive to negative
(C) positive to positive
(D) negative to negative
Answer - (B)
7. Is the effect resulting from a sulfation defect?
(A) low voltage
(B) corrosion at the terminal
(C) Short circuit in plato
(D) hard charging again
Answer - (D)
8. If the value of current in a conductor is 0 and its resistance is 20 ohms, what will be the potential difference generated at the ends of the conductor?
(A) 0 volts
(B) 20 volts
(C) Both A and B
(D) None of the above
Answer - (A)
9. The torque generated in a DC motor depends?
(A) armature current
(B) At the speed of conductor
(C) magnetic flux
(D) Both A and C
Answer - (D)
10. A 4-pole lap wound generator has 150 conductors. Total flux is 0.8 webber. The EMF generated at 1000 RPM will be
(A) 12000 volts
(B) 2000 volts
(C) 4000 volts
(D) 3600 volts
Answer - (B)
Electrician Objective Type Question Answer In English -13 (11-20)
11. The formula for finding the thermal current generated thermal energy?
(A) H = I.R.t
(B) H = R2.I.t
(C) H = I2.R.t
(D) H = V.R.t
Answer - (C)
12. Those substances that reduce the intensity of the magnetic field are called?
(A) diamagnetic
(B) ferromagnetic
(C) Molecular Magnets
(D. ALL OF THE ABOVE
Answer - (A)
13. Which motor speed increases with increasing load?
(A) series
(B) Shunt
(C) Commutative compound
(D) Differential Compound
Answer - (D)
14. If the magnetic flux is represented by 0 and the area by A, then the flux density will be equal to B?
(A) OXA
(B) Ø / A
(C) A / Ø
D) ØXA2
Answer - (B)
15. Eddy current is generated in a machine?
(A) Joule's law
(B) by lenz's law
(C) Arrested's law
(D) Faraday's law
Answer - (D)
16. What is the standard marking of the shunt field wiring of a DC shunt motor?
(A) A1, A2
(B) B1, B2
(C) E1, E2
(D) D1, D2
Answer - (C)
17. Which formula is correct according to Faraday's law of electrical decomposition?
(A) Z = I.t
(B) m∝z
(C) m = Z.I.t
(D) m∝ V.I.
Answer - (C)
18. is the unit of magneto motive force?
(A) Weber - Meter
(B) ampere turn
(C) Ampere Turn / Webber
(D) Tesla
Answer - (B)
19. If the slip ring is placed on the armature of a power generating machine, its output will be
(A) AC
(B) DC
(C) Both AC and DC
(D) Anything can happen
Answer - (A)
20. At what stage in the conductor of the armature loop is the value of the induced emf zero?
(A) Horizontal state
(B) in vertical state
(C) in parallel
(D) at any stage
Answer - (B)