Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 45 ppm. 20 ppm. 35 ppm. 25 ppm. 45 ppm. 20 ppm. 35 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will get damaged. run in a direction opposite to previous one. not run. continue running in the same direction as before. get damaged. run in a direction opposite to previous one. not run. continue running in the same direction as before. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is magnetizing. demagnetizing. ineffective. cross – magnetizing. magnetizing. demagnetizing. ineffective. cross – magnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the methods to reduce the armature reaction and its effects? All of these pole chamfering pole stacking compensating winding All of these pole chamfering pole stacking compensating winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is S.Ns Nr Zero Ns S.Ns Nr Zero Ns ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Bl2v. Blv2. Bl2v2. Blv. Bl2v. Blv2. Bl2v2. Blv. ANSWER DOWNLOAD EXAMIANS APP
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