|
Desirable feature for successful parallel operation of two alternators is ___
|
|
0
|
370
|
September 4, 2021
|
|
In a single phase ac induction motor ___
|
|
0
|
155
|
September 4, 2021
|
|
In a 3-phase 50 Hz induction motor the voltage between the ___
|
|
0
|
120
|
September 4, 2021
|
|
Stability of a synchronous motor ___
|
|
0
|
107
|
September 4, 2021
|
|
A 3-phase synchronous motor is widely used for ___
|
|
0
|
263
|
September 4, 2021
|
|
In particular motor there is a stator phase winding and ___
|
|
0
|
155
|
September 4, 2021
|
|
An induction motor having 8 poles runs at ___
|
|
0
|
229
|
September 4, 2021
|
|
At constant load, the magnitude of armature current drawn by a ___
|
|
0
|
92
|
September 4, 2021
|
|
The rotor copper losses of a synchronous motor are met by ___
|
|
0
|
160
|
September 4, 2021
|
|
The secondary of a linear induction motor normally consists of a ___
|
|
0
|
536
|
September 4, 2021
|
|
The direction of rotation of a 3-phase induction motor is clockwise when it is ___
|
|
0
|
120
|
September 4, 2021
|
|
When the excitation of normally operating unloaded salient-pole synchronous ___
|
|
0
|
213
|
September 4, 2021
|
|
A cylindrical rotor synchronous motor is switched on to the ___
|
|
0
|
806
|
September 4, 2021
|
|
If any two leads front slip rings are interchanged in ___
|
|
0
|
376
|
September 4, 2021
|
|
A synchronous generator connected to an infinite bus is ___
|
|
0
|
417
|
September 4, 2021
|
|
A pony motor is basically a ___
|
|
0
|
241
|
September 4, 2021
|
|
In dynamic braking of 3-phase induction motors ___
|
|
0
|
190
|
September 4, 2021
|
|
Skewing of the rotor in a three-phase squirrel-cage induction motor reduces ___
|
|
0
|
143
|
September 4, 2021
|
|
Which of the following devices can be used as a phase advancer?
|
|
0
|
188
|
September 4, 2021
|
|
Speeds higher than synchronous speed can be ___
|
|
0
|
615
|
September 4, 2021
|
|
A smaller air gap in a polyphase induction motor helps to ___
|
|
0
|
176
|
September 4, 2021
|
|
Rotor resistance speed control used for 3-phase slip-ring induction motors has ___
|
|
0
|
219
|
September 3, 2021
|
|
In a 3-phase squirrel cage induction motor ___
|
|
0
|
166
|
September 3, 2021
|
|
A 3-phase synchronous motor needs dc supply for ___
|
|
0
|
485
|
September 3, 2021
|
|
A synchronous motor installed at the end of a transmission line is ___
|
|
0
|
195
|
September 3, 2021
|
|
In a variable speed induction motor drive V/f is kept constant over a wide range of its ___
|
|
0
|
147
|
September 3, 2021
|
|
Which of the following statements associated with polyphase induction motor is/are correct?
|
|
0
|
129
|
September 3, 2021
|
|
In a synchronous machine, if the armature field axis is ahead of the ___
|
|
0
|
154
|
September 3, 2021
|
|
In a synchronous motor the excitation voltage on no load is approximately equal to ___
|
|
0
|
197
|
September 3, 2021
|
|
If the excitation of an alternator connected to an infinite bus-bar is changed, keeping the ___
|
|
0
|
151
|
September 3, 2021
|