Electrical Machines In most condition which frame of motor will be preferred? Open type. Drip proof. Splash proof. Totally enclosed fan coiled. Open type. Drip proof. Splash proof. Totally enclosed fan coiled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will rotate in direction opposite to that before maintenance. not start at all. get heated and damaged. rotate in the same direction as before maintenance. rotate in direction opposite to that before maintenance. not start at all. get heated and damaged. rotate in the same direction as before maintenance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fufuraldehyde analysis is done to determine the condition of oil in transformer. condition of cork gaskets used in transformer. condition of paper insulation in transformer. condition of lamination on CRGO steel sheet. condition of oil in transformer. condition of cork gaskets used in transformer. condition of paper insulation in transformer. condition of lamination on CRGO steel sheet. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where low starting torque. less costly motor is not required. power factor is less. high starting torque. low starting torque. less costly motor is not required. power factor is less. high starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Ns = 120f /p × ( 1 - r). None of these Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). Ns = 120f /p × ( 1 - r). None of these Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of cage rotors offers the following advantages less noise. uniform torque. all of below. locking tendency is reduced. less noise. uniform torque. all of below. locking tendency is reduced. ANSWER DOWNLOAD EXAMIANS APP
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