M

Mr. Dubey • 52.30K Points
Coach 

Q. and the rotor current I2 are zero at

(A) ns
(B) 2ns
(C) zero
(D) slip of 50%
Correct : Option (A)

Explanation: 
 the rotor emf and current are zero at the speed of synchronous speed of the machine.

Share

Discusssion

Login to discuss.

Be the first to start discuss.

Related MCQs

Q. Fluorescent screens are seldom used in industrial radiography because:

Q. Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)

Q. In the geysers steam is continuously vented through fissures in the ground. These vents are called

Q. Which of the following combination of processing and preservation techniques works best for smoked products?

Q. The material used for commutator brushes is mostly

Q. The furnace used for castings of cast iron in a foundry shop is known as

Q. A process which can be stopped at any stage & reversed so that the system & the surroundings are exactly restored to their initial states is k

Q. Which of the following is recommended in a refrigeration cycle?

Q. Free expansion is irreversible.

Q. The commutator of D.C. geenrator acts as ___