|
Iron loss in a transformer mainly occurs in ___
|
|
0
|
190
|
June 26, 2023
|
|
Breather is provided in a transformer to ___
|
|
0
|
297
|
June 26, 2023
|
|
Which of the following is minimized by laminating the core of a transformer?
|
|
0
|
145
|
June 26, 2023
|
|
Transformers operating in parallel will share the ___
|
|
0
|
137
|
June 26, 2023
|
|
If supply frequency of a transformer decreases, ___
|
|
0
|
173
|
June 26, 2023
|
|
The efficiency of a transformer is mainly dependent on ___
|
|
0
|
238
|
June 26, 2023
|
|
What will be the eddy current loss if the supply frequency of ___
|
|
0
|
230
|
June 26, 2023
|
|
In a three phase star - delta transformer, what is the angle difference between ___
|
|
0
|
168
|
June 26, 2023
|
|
At what power factor, the voltage regulation of a transformer can be zero?
|
|
0
|
145
|
June 26, 2023
|
|
In an induction motor 5 % change in supply voltage, will cause ___
|
|
0
|
183
|
June 26, 2023
|
|
Stable operation of an induction motor ___
|
|
0
|
216
|
June 26, 2023
|
|
Induction motors provided with open slots have ___
|
|
0
|
161
|
June 26, 2023
|
|
Motors for fans and pumps are selected in ___
|
|
0
|
148
|
June 26, 2023
|
|
The shaft of induction motor may be unbalanced due to ___
|
|
0
|
217
|
June 26, 2023
|
|
The rotor slots are slightly skewed in squirrel cage induction motor to ___
|
|
0
|
216
|
June 26, 2023
|
|
Slip rings of an induction motors are made of ___
|
|
0
|
166
|
June 26, 2023
|
|
Larger values of air flux density is taken while ___
|
|
0
|
153
|
June 26, 2023
|
|
Value of specific electric loading of Induction motor is ___
|
|
0
|
191
|
June 26, 2023
|
|
What will be the maximum power factor of an induction motor for ___
|
|
0
|
192
|
June 26, 2023
|
|
The speed of a 50 Hz three phase induction motor under full load condition is ___
|
|
0
|
198
|
June 26, 2023
|
|
The rotor of a three phase induction motor has an impedance of ___
|
|
0
|
254
|
June 26, 2023
|
|
___ types of induction motor are widely used
|
|
0
|
194
|
June 26, 2023
|
|
A slip ring Induction motor runs at 290 rpm at ___
|
|
0
|
370
|
June 26, 2023
|
|
Pole changing methods are suitable only for ___
|
|
0
|
160
|
June 26, 2023
|
|
The wound rotor type IM is used for ___
|
|
0
|
95
|
June 26, 2023
|
|
A 3 - φ induction motor can also be referred to ___
|
|
0
|
103
|
June 26, 2023
|
|
In a star - delta starting of ___
|
|
0
|
95
|
June 26, 2023
|
|
Which of following methods are suitable for the speed control of squirrel cage induction motor?
|
|
0
|
109
|
June 26, 2023
|
|
The rotor electromotive force of the IM is observed to ___
|
|
0
|
92
|
June 26, 2023
|
|
When R2 is rotor resistance, X2 the rotor reactance at ___
|
|
0
|
94
|
June 26, 2023
|