Related Questions

Open circuit test on transformers is conducted to determine
A hysteresis losses
B copper losses
C core losses
D eddy current losses
Short circuit test on transformers is conducted to determine
A hysteresis losses
B copper losses
C core losses
D eddy current losses
Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in
A short-circuiting of the secondaries
B power factor of one of the transformers is leading while that of the other lagging
C transformers having higher copper losses will have negligible core losses
D loading of the transformers not in proportion to their kVA ratings
Which of the following is not a routine test on transformers?
A Core insulation voltage test
B Impedance test
C Radio interference test
D Polarity test
__________ test is the appropriate test to determine whether a material is ductile or brittle.
A Impact
B Cupping
C Hardness
D Tensile
Out of 7,500 applications for a recruitment test, 1,500 failed to appear for the test. What percent of the total applicants did appear for the test ?
A 25
B 50
C 75
D 80
? A players average test score on 4 tests is 78. What must be his score on a 5th test for average score on the test to be
A 82
B 84
C 86
D 88
Morse test can be conducted for
A Petrol engines
B Diesel engines
C Multi cylinder engines
D All of these
Hopkinson's test on D.C. machines is conducted at
A No load
B Part load
C Full load
D Overload
An open-circuit test on a transformer is conducted primarily to measure
A insulation resistance
B copper loss
C core loss
D total loss

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