|
Which of the following machine will have maximum efficiency?
|
|
0
|
172
|
June 27, 2023
|
|
Normally for the design of transformer the ambient temperature is ___
|
|
0
|
203
|
June 27, 2023
|
|
Transformer cooling and insulating oil must be of ___
|
|
0
|
200
|
June 27, 2023
|
|
The heat generated in the transformer is dissipated mainly by ___
|
|
0
|
176
|
June 27, 2023
|
|
Tap changer is generally provided in ___
|
|
0
|
334
|
June 27, 2023
|
|
When operating, two or more transformers in parallel, % impedance of ___
|
|
0
|
182
|
June 27, 2023
|
|
The main purpose of providing tertiary winding in a three phase ___
|
|
0
|
184
|
June 27, 2023
|
|
Tertiary winding in a transformer is ___
|
|
0
|
165
|
June 27, 2023
|
|
Saving of copper in auto transformer is increased as compared to ___
|
|
0
|
175
|
June 27, 2023
|
|
Secondary winding of an auto transformer is ___
|
|
0
|
185
|
June 27, 2023
|
|
Stray losses in transformer occurs in ___
|
|
0
|
195
|
June 27, 2023
|
|
If Ke is eddy current constant, Kf is ___
|
|
0
|
150
|
June 27, 2023
|
|
If Kh is hysteresis constant, f is ___
|
|
0
|
152
|
June 27, 2023
|
|
When a transformer is loaded, the secondary terminal voltage ___
|
|
0
|
168
|
June 27, 2023
|
|
In a step down transformer which one of the following statements is true?
|
|
0
|
96
|
June 27, 2023
|
|
A step up transformer increases ___
|
|
0
|
149
|
June 27, 2023
|
|
A short circuit test on a transformer gives ___
|
|
0
|
177
|
June 27, 2023
|
|
The overall power factor of an on ___
|
|
0
|
173
|
June 26, 2023
|
|
Winding conductors of an electrical power transformer are ___
|
|
0
|
225
|
June 26, 2023
|
|
Which of the following transformer insulating oil generally used in India?
|
|
0
|
159
|
June 26, 2023
|
|
For satisfactory parallel operation of two ___
|
|
0
|
159
|
June 26, 2023
|
|
The leakage flux in a transformer depends upon ___
|
|
0
|
270
|
June 26, 2023
|
|
The no load current in a transformer lags the applied voltage by ___
|
|
0
|
183
|
June 26, 2023
|
|
The flux involved in the emf equation of ___
|
|
0
|
99
|
June 26, 2023
|
|
Two transformers with identical rating, are designed with flux densities of ___
|
|
0
|
224
|
June 26, 2023
|
|
If input of a transformer is square wave the output will be ___
|
|
0
|
174
|
June 26, 2023
|
|
CRGO steel is used in the core of transformer to ___
|
|
0
|
184
|
June 26, 2023
|
|
Air core transformer as compared to ___
|
|
0
|
184
|
June 26, 2023
|
|
Oil is provided in an oil filled transformer for ___
|
|
0
|
194
|
June 26, 2023
|
|
Lamination of transformer core is made of ___
|
|
0
|
164
|
June 26, 2023
|