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Electrician
Electrician Set-1
DC Motors
47

DC Motors MCQ - Electrician (Set-1) with Answers

47) The connection of NVC in D.C. 3 point starter is across DC supply in series with

armature

starting resistor

overload relay

shunt field

Answer is:

shunt field

DC Motors MCQ - Electrician (Set-1) with Answers

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Related DC Motors MCQ - Electrician (Set-1) with Answers

48) In a 3 point starter the No volt coil (NVC) is connected in series with :

armature

supply

starting resistor

field

Answer is:

field

49) A DC shunt motor connected through a 4 point starter starts normally when the starter handle is moved from OFF position to ON position. But the starter handle does not remain in ON position. One of the reason for the above is open in :

shunt field

protective resistor

starting resistor

overload coil

Answer is:

protective resistor

50) For which one of the following applications, D.C. shunt motor is used ?

Electric trams or trains

Electric hoist and cranes

Drives with high starting torque

Machine tool drives

Answer is:

Machine tool drives

51) The full load current of a 10 kW, 250 V, D.C. motor will be :

10 amperes

20 amperes

30 amperes

40 amperes

Answer is:

40 amperes

DC Motors MCQ - Electrician (Set-1) with Answers

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