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 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 Can be used for 50°C ambient temperature also Of lower H.P. should be selected 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 Can be used for 50°C ambient temperature also Of lower H.P. should be selected ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it Is cheap None of the listed here Provides fine speed control Is simple in construction Is cheap None of the listed here Provides fine speed control Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The maximum end play of a motor is about 2 mm 10 mm 6 mm 0.4 mm 2 mm 10 mm 6 mm 0.4 mm ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature voltage control of dc motor provides Constant current drive Constant torque drive Constant voltage drive None of the listed here Constant current drive Constant torque drive Constant voltage drive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The starting resistance of a DC motor is generally Low Infinitely large Around 500 Ω 1000 Ω Low Infinitely large Around 500 Ω 1000 Ω ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Bent shaft Open armature coil Worn bearings Too much brush tension Bent shaft Open armature coil Worn bearings Too much brush tension ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS