The ratio of average energy demand to maximum demand during a specific period in

SSC JE Electrical 2019 with solution SET-1
The ratio of average energy demand to maximum demand during a specific period in

Load factor

Utilization factor

Power factor

Form factor

Load factor

Utilization factor

Power factor

Form factor

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SSC JE Electrical 2019 with solution SET-1
At f = _____R – L – C series circuit operates at unity power factor

1/2π√LC

1 ⁄ LC

1 ⁄ RLC

1/RC

1/2π√LC

1 ⁄ LC

1 ⁄ RLC

1/RC

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SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

40Ω

10Ω

20Ω

30Ω

40Ω

10Ω

20Ω

30Ω

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SSC JE Electrical 2019 with solution SET-1
What is the reason behind using a centrifugal switch in a single-phase induction motor?

To protect the motor from overloading

To cut-off the starting winding at an appropriate instant

To out in the capacitor during running conditions

To improve the starting performance of the motor

To protect the motor from overloading

To cut-off the starting winding at an appropriate instant

To out in the capacitor during running conditions

To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

90°

0°

60°

30°

90°

0°

60°

30°

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SSC JE Electrical 2019 with solution SET-1
______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor

Star-delta

Auto-transformer

Direct-on-line

Rotor-resistance

Star-delta

Auto-transformer

Direct-on-line

Rotor-resistance

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 The ratio of average energy demand to maximum demand during a specific period in

SSC JE Electrical 2019 with solution SET-1 At f = _____R – L – C series circuit operates at unity power factor

SSC JE Electrical 2019 with solution SET-1 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1 What is the reason behind using a centrifugal switch in a single-phase induction motor?

SSC JE Electrical 2019 with solution SET-1 In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

SSC JE Electrical 2019 with solution SET-1 ______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor

SSC JE Electrical 2019 with solution SET-1
The ratio of average energy demand to maximum demand during a specific period in

SSC JE Electrical 2019 with solution SET-1
At f = _____R – L – C series circuit operates at unity power factor

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
What is the reason behind using a centrifugal switch in a single-phase induction motor?

SSC JE Electrical 2019 with solution SET-1
In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

SSC JE Electrical 2019 with solution SET-1
______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor