AC DC MOTOR DRIVES - Practice Mode

1) Which control system is used for Eddy current drives?

Slip controller Rectifier controller AC voltage controller DC chopper controller

Correct Answer: Slip controller

2) What is the purpose of JOG key in control panel of D.C drive?

Stop the motor Restart the motor Inching operation Reverse the direction of motor

Correct Answer: Inching operation

3) What is the purpose of LCD on basic operator panel in D.C drive?

Indicate the fault Display the speed Monitor the parameter Display availability of supply

Correct Answer: Monitor the parameter

4) What is the reason of using shielded cable for connecting low level signal circuits in DC drives?

Easy for connection Good appearance Protects from mechanical injuries Eliminates the electrical interference

Correct Answer: Eliminates the electrical interference

5) Which device controls the speed of A.C motor in A.C drive?

Field supply unit (FSU) COMMS technology box Speed feedback technology box Microprocessor based electronic device

Correct Answer: Microprocessor based electronic device

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