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Measurement and Instrumentation - Interview Questions and Answers

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16. An ammeter is a
A. secondary instrument
B. absolute instrument
C. recording instrument
D. integrating instrument
Explanation:
17. In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was
A. unity
B. 0.8 lagging
C. 0.8 leading
D. zero
Explanation:
18. A moving iron instrument can be used for
A. D.C. only
B. A.C. only
C. both D.C. and A.C.
D. both D.C. and A.C.
Explanation:
19. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
A. short-circuited
B. all right
C. faulty
D. all right
Explanation:
20. A dynamometer wattmeter can be used for
A. both D.C. and A.C.
B. D.C. only
C. A.C. only
D. any of the above
Explanation:
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