Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

SSC JE Electrical 2019 with solution SET-2
Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

Is equal to zero

Is less than one

Is equal to one

Is less than or equal to one

Is equal to zero

Is less than one

Is equal to one

Is less than or equal to one

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SSC JE Electrical 2019 with solution SET-2
Which of the following comes under the category of single-phase commutator motors?

Universal motor

Shaded pole motor

Resistance start motor

Capacitor start motor

Universal motor

Shaded pole motor

Resistance start motor

Capacitor start motor

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SSC JE Electrical 2019 with solution SET-2
A long straight wire carries a current I = 10 A. At what distance is the magnetic field H = 1 A/m?

5/2π

20/2π

10/2π

1/2 π

5/2π

20/2π

10/2π

1/2 π

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SSC JE Electrical 2019 with solution SET-2
The torque angle of a 3-phase synchronous motor depends on its _____

Load

Speed

Supply voltage

Excitation

Load

Speed

Supply voltage

Excitation

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SSC JE Electrical 2019 with solution SET-2
The change in DC excitation of a synchronous motor will also change the

Supply voltage

Power factor

Load angle

Speed of the motor

Supply voltage

Power factor

Load angle

Speed of the motor

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SSC JE Electrical 2019 with solution SET-2
The number of brushes required for a 4 pole, lap wound DC machine is

2

1

8

4

2

1

8

4

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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2 Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

SSC JE Electrical 2019 with solution SET-2 Which of the following comes under the category of single-phase commutator motors?

SSC JE Electrical 2019 with solution SET-2 A long straight wire carries a current I = 10 A. At what distance is the magnetic field H = 1 A/m?

SSC JE Electrical 2019 with solution SET-2 The torque angle of a 3-phase synchronous motor depends on its _____

SSC JE Electrical 2019 with solution SET-2 The change in DC excitation of a synchronous motor will also change the

SSC JE Electrical 2019 with solution SET-2 The number of brushes required for a 4 pole, lap wound DC machine is

SSC JE Electrical 2019 with solution SET-2
Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

SSC JE Electrical 2019 with solution SET-2
Which of the following comes under the category of single-phase commutator motors?

SSC JE Electrical 2019 with solution SET-2
A long straight wire carries a current I = 10 A. At what distance is the magnetic field H = 1 A/m?

SSC JE Electrical 2019 with solution SET-2
The torque angle of a 3-phase synchronous motor depends on its _____

SSC JE Electrical 2019 with solution SET-2
The change in DC excitation of a synchronous motor will also change the

SSC JE Electrical 2019 with solution SET-2
The number of brushes required for a 4 pole, lap wound DC machine is