Electrical Machines In DC motors, under trailing pole tips, flux density will_______ ? increase None of these decrease either increase or decrease increase None of these decrease either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Resistance commutation is used generally in case of DC machines bellow 5 kW. fractional kW DC machines. None of these DC machines above 10 kW. DC machines bellow 5 kW. fractional kW DC machines. None of these DC machines above 10 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux is maximum in the following part of a DC motor: under leading pole tip. under trailing pole tip. pole core. under the interpole. under leading pole tip. under trailing pole tip. pole core. under the interpole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test on induction motor is conducted to find which of the following losses? Rotational loss Stator core loss All of these Stator copper loss Rotational loss Stator core loss All of these Stator copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in a DC machine is in direct opposition to the main poles. is in the same direction as the main poles. makes an angle with the main pole axis which is load dependent. makes an angle of 90° with the main pole axis. is in direct opposition to the main poles. is in the same direction as the main poles. makes an angle with the main pole axis which is load dependent. makes an angle of 90° with the main pole axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is none of these. equal to that of second transformer. less than that of second transformer. more than that of second transformer. none of these. equal to that of second transformer. less than that of second transformer. more than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
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