A delta connected 3-phase circuit has three resistance of 36 Ohms in each phase. What is the value of per phase resistance (in ohms) of the equivalent star connected circuit?

SSC JE Electrical 2018 with solution SET-1
A delta connected 3-phase circuit has three resistance of 36 Ohms in each phase. What is the value of per phase resistance (in ohms) of the equivalent star connected circuit?

12

36

84

108

12

36

84

108

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SSC JE Electrical 2018 with solution SET-1
The ripple factor is

RMS Value/Peak Value

Peak Value/RMS Value

RMS value/DC Value

Peak Value/DC Value

RMS Value/Peak Value

Peak Value/RMS Value

RMS value/DC Value

Peak Value/DC Value

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SSC JE Electrical 2018 with solution SET-1
What is the value of current I4 (in A) for the given junction?

−4

4

−6

6

−4

4

−6

6

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SSC JE Electrical 2018 with solution SET-1
The maximum speed variation in a synchronous motor is

10%

Zero

5%

2%

10%

Zero

5%

2%

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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

The cost of PMMC instruments is high

Stray magnetic errors are small in these types of instruments

PMMC type Instruments have uniformly divided scale

These instruments are suitable for both AC and DC currents

The cost of PMMC instruments is high

Stray magnetic errors are small in these types of instruments

PMMC type Instruments have uniformly divided scale

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SSC JE Electrical 2018 with solution SET-1
The primary and secondary windings of an Auto-transformer are

Magnetically coupled

Both magnetically and electrically coupled

None of these

Electrically coupled

Magnetically coupled

Both magnetically and electrically coupled

None of these

Electrically coupled

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SSC JE Electrical 2018 with solution SET-1

SSC JE Electrical 2018 with solution SET-1 A delta connected 3-phase circuit has three resistance of 36 Ohms in each phase. What is the value of per phase resistance (in ohms) of the equivalent star connected circuit?

SSC JE Electrical 2018 with solution SET-1 The ripple factor is

SSC JE Electrical 2018 with solution SET-1 What is the value of current I4 (in A) for the given junction?

SSC JE Electrical 2018 with solution SET-1 The maximum speed variation in a synchronous motor is

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

SSC JE Electrical 2018 with solution SET-1 The primary and secondary windings of an Auto-transformer are

SSC JE Electrical 2018 with solution SET-1
A delta connected 3-phase circuit has three resistance of 36 Ohms in each phase. What is the value of per phase resistance (in ohms) of the equivalent star connected circuit?

SSC JE Electrical 2018 with solution SET-1
The ripple factor is

SSC JE Electrical 2018 with solution SET-1
What is the value of current I4 (in A) for the given junction?

SSC JE Electrical 2018 with solution SET-1
The maximum speed variation in a synchronous motor is

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

SSC JE Electrical 2018 with solution SET-1
The primary and secondary windings of an Auto-transformer are