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 1500 rpm 3000 rpm 375 rpm 75 rpm 1500 rpm 3000 rpm 375 rpm 75 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of cage rotors offers the following advantages all of below. less noise. uniform torque. locking tendency is reduced. all of below. less noise. uniform torque. locking tendency is reduced. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 20 V zero 40 V 50 V 20 V zero 40 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to f2 f V V2 f2 f V V2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 2 pole, 12 slot synchronous machine is operating at synchronous speed. Find the slot angle? 60° 30° 20° 18° 60° 30° 20° 18° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for lap-winding ? PZL/4S PZL/4SP² PZL/ 4Sa PZL/4Sa² PZL/4S PZL/4SP² PZL/ 4Sa PZL/4Sa² ANSWER DOWNLOAD EXAMIANS APP
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