Electrical Machines Induction motors have the advantage of less cost. simple in construction. less maintenance. all of below. less cost. simple in construction. less maintenance. all of below. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces damping torqe. eddy current torque. both 1 and 2. no torque. damping torqe. eddy current torque. both 1 and 2. no torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to control the field flux. limit the armature current. control the armature flux. demagnetize the field partially. control the field flux. limit the armature current. control the armature flux. demagnetize the field partially. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will improve and the speed falls. deteriorate and the speed rises. improve and the speed rises. deteriorate and the speed falls. improve and the speed falls. deteriorate and the speed rises. improve and the speed rises. deteriorate and the speed falls. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise hysteresis loss mechanical loss eddy-current loss temperature rise hysteresis loss mechanical loss eddy-current loss temperature rise ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 < I2 None of these I1 > I2 I1 = I2 I1 < I2 None of these I1 > I2 I1 = I2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS