Electrical Machines In a synchronous motor, damper windings are provided on rotor shaft. stator frame. pole faces. None of these rotor shaft. stator frame. pole faces. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the inner cage offers low resistance and low reactance. low resistance and high reactance. high resistance and high reactance. high resistance and low reactance. low resistance and low reactance. low resistance and high reactance. high resistance and high reactance. high resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) 1/S 1-S S 1/(1-S) 1/S 1-S S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Copper brushes in DC machine are used in both of above cases. where low voltage and high currents are involved. where high voltage and low current. None of these in both of above cases. where low voltage and high currents are involved. where high voltage and low current. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator, voltage drops occurs in armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance and leakage reactance. armature resistance, leakage reactance and armature reaction. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance and leakage reactance. armature resistance, leakage reactance and armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.66 Ω. 0.78 Ω. 0.24 Ω. 0.45 Ω. 0.66 Ω. 0.78 Ω. 0.24 Ω. 0.45 Ω. ANSWER DOWNLOAD EXAMIANS APP
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