ITI Electrician Objective Type Question Answer In English
1. Which is not a rotating part in the motor?(A) field winding
(B) Armature winding
(C) cooling fan
(D) armature core
Answer- (A)
2. Shunt field winding is
(A) thin wire
(B) coarse wire
(C) low turn
(D) Both A and C
Answer- (A)
3. Torque in a DC Series Motor when the load is increased?
(A) increases
(B) decreases
(C) remains fixed
(D) None of these
Answer- (A)
4. Field Coil of Generator is made?
(A) Lamination Sheet
(B) Copper
(C) Steel
(D) Cast Iron
Answer- (B)
5. Which loss also increases with increasing load current?
(A) Shunt copper loss
(B) Fraction loss
(C) Armature copper loss
(D) Iron loss
Answer- (C)
6. Interpole in generators is used to reduce which effect?
(A) heating effect
(B) armature reaction
(C) Communication
(D) sparking
Answer- (C)
7. Which of the following causes polarization defect?
(A) due to impure electrode
(B) due to electrolyte
(C) due to hydrogen gas
(D) Due to all appropriate
Answer- (C)
8. A DC Series Generator provides a load of 210 volts and a current of 3 amperes, if the series current is 3 amps the current will be the current of the armature?
(A) 70 amperes
(B) 3 amperes
(C) 30 amperes
(D) 33 amperes
Answer- (B)
9. In a DC Cumulative Compound Generator, the magnetic field of the shunt and the series field consists of each other?
(A) Assistant
(B) Opponent
(C) very weak
(D) same
Answer- (A)
10. Which rule is used to determine the direction of EMF induced in a DC generator?
(A) Faraday's
(B) Lenz's law
(C) Left-hand law of flemimg's
(D) Right-hand rule of flemimg's
Answer- (D)
11. What is the number of parallel paths in a lap wound armature?
(A) two
(B) four
(C) Equal to number of poles
(D) One pair less than the number of poles
Answer- (A)
12. Which of the following generators is also called a constant voltage generator?
(A) Shunt
(B) Series (Series)
(C) Compound
(D) Differential Compound
Answer- (A)
13. The force exerted in the opposite direction to eliminate the residual magnetisem is called?
(A) Magnetism
(B) coercivity
(C) permeance
(D) resitivity
Answer- (B)
14. Which one of the following formulas is not correct according to Ohm's Law?
(A) P = I.R
(B) I = V / R
(C) P = V2 / R
(D) V ∝ I
Answer- (A)
15. 5 resistance with each resistance of 1 ohm added parallel will be the total resistance?
(A) 5 × 1
(B) 1 × 5
(C) 1/5
(D) 5/1
Answer- (C)
16. In how long will a 25 watt lamp consume 1 unit of electrical energy?
(A) in 10 hours
(B) 20 hours
(C) 30 hours
(D) 40 hours
Answer- (D)
17. SI of temperature is a symbol of unit?
(A) ℃ (centigrade)
(B) ℉ (Fahrenheit)
(C) °k (Kelvin)
(D) °R (Ruymar)
Answer- (C)
18. Shunt field loss in generators is what percentage of total copper loss?
(A) 30 to 40%
(B) 20 to 35%
(C) 25 to 30%
(D) 20 to 30%
Answer- (B)
19. When the Series Generator is run without any load ?
(A) will give more voltage
(B) will give low voltage
(C) will not give voltage
(D) Speed will increase
Answer- (B)
20. The outer part of the Goliath Edison screw type holder is made of porcelain
(A) to strengthen
(B) To avoid high temperature
(C) To prevent electrical shock
(D) being cheaper
Answer- (B)