DC Motors The variable resistor shunting the field of a dc series motor is called a Potential divider Field divertor Armature divertor Voltage regulator Potential divider Field divertor Armature divertor Voltage regulator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The iron loss in dc motor depends on Both flux and speed None of the listed here Flux only Speed only Both flux and speed None of the listed here Flux only Speed only ANSWER DOWNLOAD EXAMIANS APP
DC Motors The running speed of a dc series motor is basically determined by Load Field excitation Armature reaction None of the listed here Load Field excitation Armature reaction None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor Of lower H.P. should be selected Can be used for 50°C ambient temperature also Of higher H.P. should be selected Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Of lower H.P. should be selected Can be used for 50°C ambient temperature also Of higher H.P. should be selected Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The back emf in a dc motor ______ Opposes the applied voltage Aids the armature current Aids the applied voltage None of the listed here Opposes the applied voltage Aids the armature current Aids the applied voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop Nothing will happen to motor This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop Nothing will happen to motor ANSWER DOWNLOAD EXAMIANS APP
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