30) If the load and flux of a D.C. motor are held constant, and the voltage applied across its armature is increased by 5 percent, the speed of the motor will :

increase by 5 percent

decrease by 5 percent

not change

infinity

Answer is:

increase by 5 percent

DC differential compound motor

DC shunt motor

DC series motor

Separately excited motor

Answer is:

Differentially compounded D.C. motor

D.C. shunt motor

D.C. Series motor

Cumulatively compouned D.C. motor

Answer is:

DC compound

DC shunt

DC series

DC long shunt compound

Answer is:

Drives a machine tools and belt drives

Rolling milldrives and other drives with load independent speed characteristic

Drives that can be started and run in no-load operation

Electrical trams or trains and other vehicle drives

Answer is: