Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Errors in a C.T. can be minimised by _________

A. making use of laminations
B. having low reactance
C. increasing the secondary winding turns
D. decreasing the primary winding turns
Answer» C. increasing the secondary winding turns
Discussion
2.

In power measurements 180 phase shift is required.

A. True
B. False
Answer» B. False
Discussion
3.

Phase angle error is given by ____________

A. ( frac{180}{ } [ frac{1}{nI_s}] ) degrees
B. ( frac{180}{ } [ frac{I_m}{I_s}] ) degrees
C. ( frac{180}{ } [ frac{I_m}{n}] )degrees
D. ( frac{180}{ } [ frac{I_m}{nI_s}] ) degrees
Answer» E.
Discussion
4.

Phase angle in a C.T. is defined as ____________

A. ( frac{180}{ } [ frac{I_m cos }{nI_s}] ) degrees
B. ( frac{180}{ } [ frac{I_c sin }{nI_s}] ) degrees
C. ( frac{180}{ } [ frac{I_m cos I_c sin }{nI_s}] ) degrees
D. ( frac{180}{ } [ frac{I_m sin I_c cos }{nI_s}] ) degrees
Answer» D. ( frac{180}{ } [ frac{I_m sin I_c cos }{nI_s}] ) degrees
Discussion
5.

Ratio error is defined as ___________

A. Ratio error = <sup>K<sub>n</sub></sup> <sub>R</sub>
B. Ratio error = <sup>K<sub>n</sub> R</sup> <sub>R</sub>
C. Ratio error = K<sub>n</sub> R
D. Ratio error = <sup>1</sup> <sub>R</sub>
Answer» C. Ratio error = K<sub>n</sub> R
Discussion
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