M

Mr. Dubey • 100.69K Points
Coach

Q. For three-phase induction motors which of the following is the least efficient method of speed control ?

  • (A) Cascade control
  • (B) Pole changing
  • (C) Rheostatic control
  • (D) Combination of cascade and pole changing
Share

No solution found for this question.
Add Solution and get +2 points.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Related MCQs

Q. 1 MICROWAVE PASSIVE COMPONENTS: DIRECTIONAL COUPLER, POWER DIVIDER, MAGIC TEE ATTENUATOR, RESONATOR

Q. In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with at all frequencies other th

Q. Satisfactory commutation of D.C. machines requires

Q. An ideal OP-AMP is an ideal

Q. An automatic toaster is a loop control system.

Q. By the use of which of the following DC can be obtained from AC?

Q. The initial response when the output is not equal to input is called

Q. Use mason’s gain formula to calculate the transfer function of given figure:

Q. In a series RL circuit, 9 V rms is measured across the resistor, and 15 V rms is measured across the inductor. The peak value of the source voltage is

Q. Spring constant in force-voltage analogy is analogous to

Question analytics