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 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 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is inversely proportional to flux per pole Directly proportional to flux per pole None of the listed here inversely proportional to applied voltage inversely proportional to flux per pole Directly proportional to flux per pole None of the listed here inversely proportional to applied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which method of braking is generally used in elevators? None of these Plugging Regenerative braking Rheostat braking None of these Plugging Regenerative braking Rheostat braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Economical Unsuitable for rapidly changing loads Suitable for getting speeds above the normal Efficient Economical Unsuitable for rapidly changing loads Suitable for getting speeds above the normal Efficient ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it Provides fine speed control None of the listed here Is cheap Is simple in construction Provides fine speed control None of the listed here Is cheap Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Field divertor Potential divider Voltage regulator Armature divertor Field divertor Potential divider Voltage regulator Armature divertor ANSWER DOWNLOAD EXAMIANS APP
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