Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 10 12 24 5 10 12 24 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC shunt motors are suitable for Lathes. All of this. Centrifugal pumps Blowers and fans. Lathes. All of this. Centrifugal pumps Blowers and fans. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutation in a DC machine may be explained as a process by virtue of which emf is induced in the armature conductors. by which electric current in a coil is reversed. in which magnetic field is set up. how alternate flux affects the main field flux. by virtue of which emf is induced in the armature conductors. by which electric current in a coil is reversed. in which magnetic field is set up. how alternate flux affects the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the advantages of carbon brush over the copper brush? All of these They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush All of these They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be 3000 rpm 375 rpm 1500 rpm 75 rpm 3000 rpm 375 rpm 1500 rpm 75 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC motor under constant terminal voltage what is the relation between torque (Te) and power (P) T is independent of P T∝ P² T∝ P T∝ P³ T is independent of P T∝ P² T∝ P T∝ P³ ANSWER DOWNLOAD EXAMIANS APP
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