DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Less than full-load current Almost negligible Rated full-load current More than full-load current Less than full-load current Almost negligible Rated full-load current More than full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 0.5 1.0 4.0 2.0 0.5 1.0 4.0 2.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit A resistance is connected in series with armature A resistance is connected parallel to the armature A high value resistor is connected across the field winding Armature is temporarily open circuited A resistance is connected in series with armature A resistance is connected parallel to the armature A high value resistor is connected across the field winding Armature is temporarily open circuited ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Reduce sparking Produce flat characteristics Increase speed Decrease speed Reduce sparking Produce flat characteristics Increase speed Decrease speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Voltage regulator Potential divider Field divertor Armature divertor Voltage regulator Potential divider Field divertor Armature divertor ANSWER DOWNLOAD EXAMIANS APP
DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Above as well as below the normal speed None of the listed here Above the normal speed only Below the normal speed only Above as well as below the normal speed None of the listed here Above the normal speed only Below the normal speed only ANSWER DOWNLOAD EXAMIANS APP
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