Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is rectangular co- sinusoidal sinusoidal flat-topped rectangular co- sinusoidal sinusoidal flat-topped ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? same in both methods field weakening method armature resistance control None of these same in both methods field weakening method armature resistance control None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively less and thick large and thin large and thick less and thin less and thick large and thin large and thick less and thin 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 375 rpm 75 rpm 1500 rpm 3000 rpm 375 rpm 75 rpm 1500 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is 2 and 3 1 and 3 1 alone 1 and 2 2 and 3 1 and 3 1 alone 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor, the starting torque developed is proportional to 1/V 1/V² V² supply voltage V 1/V 1/V² V² supply voltage V ANSWER DOWNLOAD EXAMIANS APP
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