Electrical Engineering : Measurement And Instrumentation QUESTIONS AND ANSWERS :: part3 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.In a Weston synchronoscope, the fixed coils are connected across |
| bus-bars |
| incoming alternator |
| a lamp |
| none of the above |
17.Wagner earthing device is used to eliminate errors due to |
| electrostatic coupling |
| electromagnetic coupling |
| both (a) and (b) |
| none of the above |
18.Basically a potentiometer is a device for |
| comparing two voltages |
| measuring a current |
| comparing two currents |
| measuring a voltage |
19.In a Weston frequency meter, the magnetic axes of the two fixed coils are |
| parallel |
| perpendicular |
| inclined at 60� |
| inclined at 120� |
20.In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at |
| 0� |
| 60� |
| 90� |
| 120� |
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