DOL starter is used for 3 phase I.M. motor having rating of

Related MCQs

• Thermal relays are used in DOL starter of Three Phase I.M. to
• No. of contacts used in a contactor of DOL starter
• Q. In DOL starter NO(Normally open) contact is used as
• In DOL starter NC(Normally closed) contact is used as
• The advantage of Autotransformer starter over stator resistance starter is
• When three phase induction motor is started with star-delta starter, during starting stator is connected
• When three phase induction motor is started with star-delta starter, during normal running condition, stator is connected
• A 4 pole, 50Hz , 3 phase I M is running at 1425rpm on full load having rotor impedance per phase on standstill as 0.4+j2Ω. The external resistance required in the rotor per phase to get maximum torque at start is ___.
• With given power rating for lower current and higher voltage rating of a d.c. machine, one should prefer_________.
• Star- delta starter of an induction motor