In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

1

0.9

0.5

0.8

1

0.9

0.5

0.8

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SSC JE Electrical 2019 with solution SET-1
A single-phase circuit’s power factor can be measured with a/an

Combination of a voltmeter and ammeter

Energy meter alone

Wattmeter alone

Combination of a voltmeter, ammeter, and wattmeter

Combination of a voltmeter and ammeter

Energy meter alone

Wattmeter alone

Combination of a voltmeter, ammeter, and wattmeter

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SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

190 V

215 V

210 V

200 V

190 V

215 V

210 V

200 V

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SSC JE Electrical 2019 with solution SET-1
Which of the following fuel has the least calorific value?

LPG

Wood

Hydrogen

Kerosene oil

LPG

Wood

Hydrogen

Kerosene oil

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SSC JE Electrical 2019 with solution SET-1
______ Opposes the change in circuit voltage

Resistance

Capacitance

Inductance

Inductive reactance

Resistance

Capacitance

Inductance

Inductive reactance

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SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors

It is a constant speed motor

The field winding is placed on the rotor

It is a self-starting machine

The armature winding is placed on the stator

It is a constant speed motor

The field winding is placed on the rotor

It is a self-starting machine

The armature winding is placed on the stator

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1 A single-phase circuit’s power factor can be measured with a/an

SSC JE Electrical 2019 with solution SET-1 A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1 Which of the following fuel has the least calorific value?

SSC JE Electrical 2019 with solution SET-1 ______ Opposes the change in circuit voltage

SSC JE Electrical 2019 with solution SET-1 Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1
A single-phase circuit’s power factor can be measured with a/an

SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1
Which of the following fuel has the least calorific value?

SSC JE Electrical 2019 with solution SET-1
______ Opposes the change in circuit voltage

SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors