Electrical Machines The slot edges in a DC machine are made of Cast iron. Mild steel. Fibre. Silicon steel. Cast iron. Mild steel. Fibre. Silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to hold armature stamping in position. protect the whole machine. provide return path for the flux. ventilate the armature. hold armature stamping in position. protect the whole machine. provide return path for the flux. ventilate the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series generator is connected in series to a feeder having 0.5Ω resistance to boost the voltage. The induced voltage is given by Eg = 0.6Ia, Ra = 0.2Ω and Rs = 0.3Ω. Find the voltage boosted by the generator, when delivering 400 Amp? 60 V. 90 V. 40 V. 30 V. 60 V. 90 V. 40 V. 30 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines How can the synchronous speed of a 3 - Φ IM be varied? By varying the supply frequency. By varying number of poles. By varying supply voltage. Both (A) and (B). By varying the supply frequency. By varying number of poles. By varying supply voltage. Both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are inductively linked. electrically linked. mechanically linked. conductively linked. inductively linked. electrically linked. mechanically linked. conductively linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by cooling the armature. reducing the load voltage. increasing the input to the prime mover. increasing the excitation. cooling the armature. reducing the load voltage. increasing the input to the prime mover. increasing the excitation. ANSWER DOWNLOAD EXAMIANS APP
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