Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) 1/S S 1-S 1/(1-S) 1/S S 1-S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an synchronous motor. synchronous generator. induction motor. induction generator. synchronous motor. synchronous generator. induction motor. induction generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T ∝ P. T ∝ √P. T2 ∝ P3. T is independent of P. T ∝ P. T ∝ √P. T2 ∝ P3. T is independent of P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Effiency. Speed regulation. Running Torque. Starting torque. Effiency. Speed regulation. Running Torque. Starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Diverters are used only in series motors either of these shunt motors None of these series motors either of these shunt motors None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. ANSWER DOWNLOAD EXAMIANS APP
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