A synchronous motor runs at 600rpm, which of the following case is true?

SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 12, f = 60 Hz

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 12, f = 60 Hz

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

Inductive reactance

Inductance

Resistance

Capacitance

Inductive reactance

Inductance

Resistance

Capacitance

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SSC JE Electrical 2019 with solution SET-1
Hunting occurs in a/an motor

Synchronous

DC shunt

DC series

Induction

Synchronous

DC shunt

DC series

Induction

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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

Direct-on-line

Rotor-resistance

Auto-transformer

Star-delta

Direct-on-line

Rotor-resistance

Auto-transformer

Star-delta

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

Kerosene oil

Wood

Hydrogen

LPG

Kerosene oil

Wood

Hydrogen

LPG

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SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

0.4 V

−2.5 V

−4 V

−10 V

0.4 V

−2.5 V

−4 V

−10 V

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 A synchronous motor runs at 600rpm, which of the following case is true?

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

SSC JE Electrical 2019 with solution SET-1 Hunting occurs in a/an motor

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 Which of the following fuel has the least calorific value?

SSC JE Electrical 2019 with solution SET-1 A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

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

SSC JE Electrical 2019 with solution SET-1
Hunting occurs in a/an motor

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
Which of the following fuel has the least calorific value?

SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is