Electrical Drives

The basic elements of a electric drive are

• electric motor.

• control system

• electrical motor and control system

• none of the above

A four quadrant operation requires

• two full converters in series.

• two full converters connected in parallel

• two full converter connected in back to back

• two semi converters connected in back to back

The consideration involved in the selection of the type of electric drive for a particular application depends upon

• Speed control range and its nature

• Starting Nature

• Environmental condition

• All of the above

The consideration involved in the selection of the type of electric drive for the Load Variation application depends upon

• Constant Load

• Continuous Variable Load

• Pulsating Load

• All of the above

__________ drive is also called as Line shaft drive

• Individual drive

• Multimotor drive

• Group Drive

• None of the above

he advantages of the individual drive is/are

• Flexibility in operation

• Each machine can be run or stop as desired

• Maintenance of Lineshaft, bearing is eliminated

• All of the above

he drive which is used for metal-cutting machines tools, rolling mills etc. are

• Individual drive

• Multimotor drive

• Group Drive

• None of the above

The advantages of a group driver electric drive are

• HIgh efficiency

• Low Noise

• Constant speed

• All of the above

An elevator drive is required to operate in

• one quadrant only

• two quadrants

• three quadrants

• four quadrants

Electric drive is becoming more and more popular because

• all of below.

• it provide smooth and easy control.

• it is cheaper in cost.

• it is simple and reliable.