What is the reason behind using a centrifugal switch in a single-phase induction motor?

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 out in the capacitor during running conditions

To cut-off the starting winding at an appropriate instant

To improve the starting performance of the motor

To protect the motor from overloading

To out in the capacitor during running conditions

To cut-off the starting winding at an appropriate instant

To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
The function of condenser in a Thermal power plant is:

Purify steam

Purify water

Condense used steam into water

Condense water

Purify steam

Purify water

Condense used steam into water

Condense water

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SSC JE Electrical 2019 with solution SET-1
With the current direction marked in the circuit shown, the net voltage applied is

(V2 − V1)

−(V2 − V1)

V2

V1

(V2 − V1)

−(V2 − V1)

V2

V1

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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?

30Ω

10Ω

20Ω

40Ω

30Ω

10Ω

20Ω

40Ω

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SSC JE Electrical 2019 with solution SET-1
Which of the following lamps has the shortest/less life span in working hours?

Sodium vapor lamp

Mercury vapor lamp

Fluorescent lamp

Incandescent lamp

Sodium vapor lamp

Mercury vapor lamp

Fluorescent lamp

Incandescent lamp

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SSC JE Electrical 2019 with solution SET-1
The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as

R2 ⁄ (2 − S)

R2 ⁄ S

R2 ⁄ (1 − S)

R2 ⁄ (1 + S)

R2 ⁄ (2 − S)

R2 ⁄ S

R2 ⁄ (1 − S)

R2 ⁄ (1 + S)

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SSC JE Electrical 2019 with solution SET-1

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 The function of condenser in a Thermal power plant is:

SSC JE Electrical 2019 with solution SET-1 With the current direction marked in the circuit shown, the net voltage applied is

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 Which of the following lamps has the shortest/less life span in working hours?

SSC JE Electrical 2019 with solution SET-1 The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as

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
The function of condenser in a Thermal power plant is:

SSC JE Electrical 2019 with solution SET-1
With the current direction marked in the circuit shown, the net voltage applied is

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
Which of the following lamps has the shortest/less life span in working hours?

SSC JE Electrical 2019 with solution SET-1
The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as