|
Which of the following is the common synchronous speed in ___
|
|
0
|
672
|
September 11, 2021
|
|
An alternator operating at lower voltage, for the same power rating, will be ___
|
|
0
|
220
|
September 11, 2021
|
|
Which of the following conditions does not have to be met by alternators working in parallel?
|
|
0
|
276
|
September 9, 2021
|
|
If the driving force of both the alternators running in parallel is ___
|
|
0
|
218
|
September 9, 2021
|
|
As load power factor of an alternator becomes more ___
|
|
0
|
257
|
September 9, 2021
|
|
Two alternators are to be put in ___
|
|
0
|
211
|
September 9, 2021
|
|
The load between two steam-driven alternators operating in ___
|
|
0
|
193
|
September 9, 2021
|
|
For parallel operation, A.C. polyphase alternators must have the same ___
|
|
0
|
454
|
September 9, 2021
|
|
Turbo-alternators usually have ___
|
|
0
|
178
|
September 9, 2021
|
|
To obtain sinusoidal flux distribution ___
|
|
0
|
254
|
September 9, 2021
|
|
If an alternator is operating at leading power factor, then it can be ___
|
|
0
|
1185
|
September 9, 2021
|
|
The slip rings employed in a 3-phase alternator in hydro station are ___
|
|
0
|
229
|
September 9, 2021
|
|
Which of the following is not integral part of synchronous generator system?
|
|
0
|
281
|
September 9, 2021
|
|
Harmonic component of generated e.m.f. will be more in ___
|
|
0
|
460
|
September 9, 2021
|
|
Turbo-alternators are generally used to run at ___
|
|
0
|
264
|
September 9, 2021
|
|
The speed of a 4-pole 60 Hz synchronous machine will be ___
|
|
0
|
179
|
September 9, 2021
|
|
___ plays an important role in overspeed protection of a generator?
|
|
0
|
358
|
September 9, 2021
|
|
In an alternator, the frequency of voltage generated depends on ___
|
|
0
|
222
|
September 9, 2021
|
|
When an alternator is supplying unity power factor load, the ___
|
|
0
|
264
|
September 9, 2021
|
|
The distribution factor, in alternators, is defined as ___
|
|
0
|
301
|
September 9, 2021
|
|
The power factor of an alternator is determined by its ___
|
|
0
|
362
|
September 9, 2021
|
|
The choice of field construction, in an alternator, is ___
|
|
0
|
236
|
September 9, 2021
|
|
If the input to the prime mover of an alternator is kept constant but ___
|
|
0
|
302
|
September 9, 2021
|
|
Synchronous impedance method gives more regulation as ___
|
|
0
|
206
|
September 9, 2021
|
|
In an alternator terminal voltage rise will be ___
|
|
0
|
580
|
September 9, 2021
|
|
4 pole 1500 r.p.m. alternator will generate e.m.f. at ___
|
|
0
|
297
|
September 9, 2021
|
|
Dirt accumulation in generators can cause all of ___
|
|
0
|
291
|
September 9, 2021
|
|
When the speed of an altenator increases ___
|
|
0
|
187
|
September 9, 2021
|
|
Unbalanced three-phase stator currents cause ___
|
|
0
|
456
|
September 9, 2021
|
|
In power generating stations (Thermal stations), the usual number of ___
|
|
0
|
293
|
September 9, 2021
|