Dogcare manager interview questions and answers

32. Explain different types of D.C motors? Give their 
applications
Different type of DC motors and their applications are as 
follows:-
• Shunt motors: It has a constant speed though its starting 
torque is not very high. Therefore, it is suitable for 
constant speed drive, where high starting torque is not 
required such as pumps, blowers, fan, lathe machines, 
tools, belt or chain conveyor etc.
• Service motors: It has high starting torque & its speed is 
inversely proportional to the loading conditions i.e. when 
lightly loaded, the speed is high and when heavily loaded, 
it is low. Therefore, motor is used in lifts, cranes, traction 
work, coal loader and coal cutter in coalmines etc.
• Compound motors: It also has high starting torque and 
variable speed. Its advantage is, it can run at NIL loads 
without any danger. This motor will therefore find its 
application in loads having high inertia load or requiring 
high intermittent torque such as elevators, conveyor, 
rolling mill, planes, presses, shears and punches, coal 
cutter and winding machines etc.
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