For a 1.8o, 2-phase bipolar stepper motor, the stepping rate is 100 steps/second. The rotational speed of the motor in rpm is
A 3 stack stepper motor with 12 numbers of rotor teeth has a step angle of ____________.
A 200W, 230V, 50Hz capacitor-start motor has the following constants:
Main winding: Rm = 4.5Ω, Xm = 3.7Ω
Starting winding: Rs = 9.5Ω, Xs = 3.5Ω
Find the value of starting capacitance that will result in maximum starting torque. (in μF)
Match the following:
A 220 V, 50 Hz, 6 – pole single phase induction motor is running at a speed of 940 rpm in clockwise (forward) direction. If the rotor resistance at standstill is 5Ω. Calculate the effective rotor resistance(in Ohm) in the backward branch of the equivalent circuit.
A induction motor has double-cage rotor with equivalent impedance at stand-still of (1+j1) and (0.2+j 4) ohms. Find the relative values of torque produced by each cage at 5% slip. ie Find ratio of T1:T2