Electrical Machines The heat generated in the transformer is dissipated mainly by convection. conduction. radiation. All of these convection. conduction. radiation. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above question, the output power delivered by generator G1 and G2 will be 9.3 kW, 9.3 kW. 9.6 kW, 12 kW. 6.3 kW, 9.3 kW. 5.7 kW, 8.7 kW. 9.3 kW, 9.3 kW. 9.6 kW, 12 kW. 6.3 kW, 9.3 kW. 5.7 kW, 8.7 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing of DC generator means None of these creation of residual magnetism by a DC source. neutralization of residual magnetism. increasing flux density by providing extra ampere-turns in field. None of these creation of residual magnetism by a DC source. neutralization of residual magnetism. increasing flux density by providing extra ampere-turns in field. 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 sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are 1, 2 and 3 1, 3 and 5 1, 2, 3 and 5 1 and 3 1, 2 and 3 1, 3 and 5 1, 2, 3 and 5 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Kh is hysteresis constant, f is supply frequency, Bm maximum flux density in core of transformer, the expression of hysteresis loss in transformer, is given by Khf2Bm1.6. KhfBm3. KhfBm. KhfBm1.6. Khf2Bm1.6. KhfBm3. KhfBm. KhfBm1.6. ANSWER DOWNLOAD EXAMIANS APP
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