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 is less with wave winding than with lap winding. Armature emf depends on weather the machine is running as a motor or generator. 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 is less with wave winding than with lap winding. Armature emf depends on weather the machine is running as a motor or generator. 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 The condition for maximum running torque is zero 0.707 lagging R = S.X 0.5 lagging unity zero 0.707 lagging R = S.X 0.5 lagging unity ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron loss in a transformer mainly occurs in iron made tank of transformer. steel core in transformer. transformer insulating oil. winding of transformer. iron made tank of transformer. steel core in transformer. transformer insulating oil. winding of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When Flemings right hand rule to find the direction of induced emf, the thumb points towards direction of induced emf. opposite to the direction of motion of the conductor. direction of motion of the conductor. direction of flux. direction of induced emf. opposite to the direction of motion of the conductor. direction of motion of the conductor. direction of flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 2, 3 and 4. 1, 3 and 4. 2 and 4. 1, 2 and 3. 2, 3 and 4. 1, 3 and 4. 2 and 4. 1, 2 and 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulation method is accurate ? Synchronous impedance method American standard association method MMf method ZPF method Synchronous impedance method American standard association method MMf method ZPF method ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS