Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW?

Electrical Machines
Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW?

48.5 Hz

45 HZ

50 Hz

48 Hz

48.5 Hz

45 HZ

50 Hz

48 Hz

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Electrical Machines
In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

negative sequence currents are generated.

the damper bars develop induction generator torque.

the damper bars develop synchronous motor torque.

the damper bars develop induction motor torque.

negative sequence currents are generated.

the damper bars develop induction generator torque.

the damper bars develop synchronous motor torque.

the damper bars develop induction motor torque.

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Electrical Machines
Which single phase motor is used for a refrigerator?

Split phase.

Repulsion.

Universal.

Capacitor run.

Split phase.

Repulsion.

Universal.

Capacitor run.

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Electrical Machines
A 3 - ÃŽÂ¦ induction motor draws an current of 50 A from mains when starts by direct switching. If an auto transformer with 60 % tapping is used for starting the current drawn from the mains will be

18.

50.

36.

80.

18.

50.

36.

80.

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Electrical Machines
The shaft torque of a dc motor is less than the electromagnetic torque because of

mechanical losses.

hysteresis losses.

ohmic losses.

eddy current losses.

mechanical losses.

hysteresis losses.

ohmic losses.

eddy current losses.

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Electrical Machines
The rotor slots are slightly skewed in squirrel cage induction motor to

provide ease of fabrication.

decrease the amount of copper to be used.

increase the strength of rotor bars.

reduce the magnetic hum and locking tendency of rotor.

provide ease of fabrication.

decrease the amount of copper to be used.

increase the strength of rotor bars.

reduce the magnetic hum and locking tendency of rotor.

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Electrical Machines

Electrical Machines In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

Electrical Machines Which single phase motor is used for a refrigerator?

Electrical Machines A 3 - ÃŽÂ¦ induction motor draws an current of 50 A from mains when starts by direct switching. If an auto transformer with 60 % tapping is used for starting the current drawn from the mains will be

Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of

Electrical Machines The rotor slots are slightly skewed in squirrel cage induction motor to

Electrical Machines
In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

Electrical Machines
Which single phase motor is used for a refrigerator?

Electrical Machines
A 3 - ÃŽÂ¦ induction motor draws an current of 50 A from mains when starts by direct switching. If an auto transformer with 60 % tapping is used for starting the current drawn from the mains will be

Electrical Machines
The shaft torque of a dc motor is less than the electromagnetic torque because of

Electrical Machines
The rotor slots are slightly skewed in squirrel cage induction motor to