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

Changing the supply voltage
Changing the frequency
Changing the supply Terminals
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?

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

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