Electrical Machines The starting resistance of DC motor is generally around 500 ohms. 1000 ohms. Infinitely large. Low. around 500 ohms. 1000 ohms. Infinitely large. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is prefered for which of the following rating? low current and high voltage high current and high voltage low current and low voltage high current and low voltage low current and high voltage high current and high voltage low current and low voltage high current and low voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction motor None of these an induction generator a synchronous motor an induction motor None of these an induction generator a synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine both the windings have thin leads both the windings have thick leads armature winding has thick leads whereas field winding has thin leads armature winding has thin leads whereas field winding has thick leads both the windings have thin leads both the windings have thick leads armature winding has thick leads whereas field winding has thin leads armature winding has thin leads whereas field winding has thick leads ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Example of double excited machine is None of these Both are correct. Synchronous motor. DC Shunt Motor None of these Both are correct. Synchronous motor. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding the speed control of dc motors : 1. ward-leonard method is suitable forconstant-torque drives 2. Ward-leonard method is suitable for constant-power drives 3. field-control method facilitates speed control below base speed 4. Armature-resistance control method is more efficient than ward-leanard method 5. Field-control method is suitable for constant-torque drives 6. Armature-resistance control method is suitable for constant-torque drives From these, the correct answer is 1, 3, 5 1, 2, 6 1, 4, 6 1, 2, 5 1, 3, 5 1, 2, 6 1, 4, 6 1, 2, 5 ANSWER DOWNLOAD EXAMIANS APP
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