Electrical Machines In DC machines shape of net flux density is? sine wave flat tapped or trapezoidal saddle shape peaky in nature sine wave flat tapped or trapezoidal saddle shape peaky in nature ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is equal to that of second transformer. more than that of second transformer. less than that of second transformer. none of these. equal to that of second transformer. more than that of second transformer. less than that of second transformer. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 3200 W and 5200 W 1600 W and 1250 W 1600 W and 5000 W 3200 W and 2500 W 3200 W and 5200 W 1600 W and 1250 W 1600 W and 5000 W 3200 W and 2500 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature voltage control is considered suitable for a DC motor driven at constant speed. torque. current. power. speed. torque. current. power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of None of these armature reaction. residual magnetism. permanent magnets. None of these armature reaction. residual magnetism. permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor will deliver maximum power when load angle is 0°. load angle is equal to internal angle θ. input power factor is unity. load angle is 45°. load angle is 0°. load angle is equal to internal angle θ. input power factor is unity. load angle is 45°. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS