Electrical Drives - Assignment 1

Stator voltage control for the speed control of induction motor is suitable for......

• Fan and Pump Drive

• Drive of a crane

• Running as the generator

• Constant Load drive

________ duty cycle consist of frequent on load and off-load period.

• Continuous Duty with constant Load

• Continuous Duty With the variable load

• Short Time duty

• Intermittent duty

Which type of drive can be used for Textile Industry?

• DC Motor

• Squirrel cage Induction Motor

• Cumulative Compound Motor

• Synchronous Motor

__________ drive is also called as Line shaft drive

• Individual drive

• Multimotor drive

• Group Drive

• None of the above

For a three phase induction motor, which of the following techniques not used?

• Frequency control

• stator voltage control

• Rotor voltage control

• Moisture control

Type-A chopper is used for obtaining which type of mode?

• Reverse motoring mode

• Motoring mode

• Reverse regenerative braking mode

• Regenerative braking mode

What is the condition for the steady-state operation of the motor?

• Load torque > Motor torque

• Load torque <<<< Motor torque

• Load torque = Motor torque

• Load torque < Motor torque

In case of variable frequency system __________ is varied

• T

• Ton

• Toff

• supply frequency

In rotor resistance control method, with the increase in speed.

• torque increases

• torque decreases

• slip increases

• losses increase

In current source inverters

• L filter is used after the CSI (load side

• L filter is used before the CSI (input side)

• C filter is used after the CSI (load side)

• C filter is used before the CSI (input side)