frequency( fr) of induced emf in rotor of I.M. is given by --

Related MCQs

• A 3 phase indution motor is running with slip of 4% hving synchronous speed of 1500rpm. If rotor induced emf per phase in standstill condition is 115.47V and rotor impedance in standstill condition is 0.1+j1 Ω then torque developed ia____.
• A 4 pole, 50Hz induction motor runs at a speed of 1440rpm. The frequency of the rotor induced emf is _____.
• At any given slip s the rotor induced emf (E2r) is ----
• Rotor induced emf is maximum when slip is --
• When load is connected to three phase induction motor is increased, then its rotor induced emf
• A 3-phase ,400 V, 4-pole induction motor is fed from a 3-phase, 400V, 50 Hz supply and runs at 1440 rpm. The frequency of rotor emf is
• The magnitude of induced emf in a dc generator is given by
• A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction?
• The induced emf in the armature conductors of a dc motor is
• The maximum voltage is induced in the rotor of 3-ph induction motor when it----