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 None of these I1 < I2 I1 = I2 I1 > I2 None of these I1 < I2 I1 = I2 I1 > I2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 0.54. 1. 0.7. 0.3. 0.54. 1. 0.7. 0.3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer has specifications as 250 KVA, 11000 V/415 V, 50 Hz. What are the values of primary and secondary currents? primary = 602 A, secondary = 22.7 A primary = 11.4 A, secondary = 301 A primary = 301 A, secondary = 22.7 A primary = 22.7 A, secondary = 602.4 A primary = 602 A, secondary = 22.7 A primary = 11.4 A, secondary = 301 A primary = 301 A, secondary = 22.7 A primary = 22.7 A, secondary = 602.4 A ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer core is laminated to reduce eddy current loss. both 1 and 2. copper loss. hysteresis loss. eddy current loss. both 1 and 2. copper loss. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, for the same value of Æ, Z and N; which one of the following statements is correct? Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf is more with wave winding than with lap winding. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf is more with wave winding than with lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If input of a transformer is square wave the output will be sine wave. triangular wave. pulsed wave. square wave. sine wave. triangular wave. pulsed wave. square wave. ANSWER DOWNLOAD EXAMIANS APP
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