SSC JE Electrical 2018 with solution SET-1
The speed of a synchronous motor can be changed by

Changing the supply voltage
Changing the supply Terminals
Changing the frequency
Changing the load

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SSC JE Electrical 2018 with solution SET-1
 Which one of the following statement is NOT true about PMMC type instruments?

PMMC type Instruments have uniformly divided scale
Stray magnetic errors are small in these types of instruments
The cost of PMMC instruments is high
These instruments are suitable for both AC and DC currents

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SSC JE Electrical 2018 with solution SET-1
 Which of the following is the CORRECT formula for permeance?

B/H
I/H
φ/Fm
Fm/L

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SSC JE Electrical 2018 with solution SET-1
 Which of the following instrument can measure voltage resistance and current?

Wattmeter
Ammeter
Voltmeter
Multimeter

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