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Electrical Measurements Knowledge Test
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Electrical measurements are used to determine the magnitude of quantities such as voltage, current, power, and energy. The four fundamental units of electricity are volts, amps, ohms, and watts.   Volt: The difference in power between two points in an electrical current-conducting element. The unit of measurement is the volt. Amp: The magnitude of current in an electrical circuit. Ohm: The value of a conductor relative to the flow of electrons. Watt: The unit of electrical power, equal to one ampere under the pressure of one volt. Watts are used to measure the power consumption of small... Show more
Electrical Measurements Knowledge Test
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25 Questions

1. In an Anderson bridge, the unknown inductance is measured in terms of
2. To measure an A.C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken
3. Basically a potentiometer is a device for
4. The ratio of maximum displacement deviation to full scale deviation of the instrument is called
5. The power of a n-phase circuit can be measured by using a minimum of
6. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be
7. Volt box is a component to
8. E.m.f. of a Weston cell is accurately measured by
9. The gravity controlled instrument has crowded scale because current is proportional to
10. Wattmeter cannot be designed on the principle of
11. The two pressure coils of a single phase power factor meter have
12. Wagner earthing device is used to eliminate errors due to
13. To avoid the effect of stray magnetic field in A.C. bridges we can use
14. In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at
15. For measurements on high voltage capacitors, the suitable bridge is
16. Two holes in the disc of energymeter are drilled at the opposite sides of the spindle to
17. In a single phase power factor meter the phase difference between the currents in the two pressure coils is
18. Alternating current is measured by
19. If an instrument has cramped scale for larger values, then it follows
20. In a meggar controlling torque is provided by
21. To measure radio frequency, the suitable frequency meter is
22. In an energymeter braking torque is produced to
23. The electrical power to a meggar is provided by
24. In order to achieve high accuracy, the slide wire of a potentiometer should be
25. An instrument transformer is used to extend the range of

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