Quiz on Special Electrical Machines
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1. What is the angle between stator direct axis and quadrature axis ?
1 point
2.Space angle, θr is measured between stator d-axis and _____
1 point
3. Reluctance motor can produce torque at ________
1 point
4.For a reluctance motor , the maximum average torque occurs when δ= __________
1 point
5. For a given reluctance motor, Rld and Rlq are ________
1 point
6. 1. For a 1.8°, 2 phase bipolar stepper motor, the stepping rate is 100 step / second. The rotational speed of the motor in r.p.m is
1 point
7.A stepper motor has a step-angle of 2.5°. Determine the resolution?
0 points
8.Both stator and rotor there are eight teeth of a 3 stack four pole stepper motor, when the excitation is changed from one stack to another to the next. The step angle is _________
1 point
9.A 3 - Φ, three stacks, variable reluctance step motor has 20 poles on each rotor and stator stack. The step angle of this motor is__________
1 point
10. A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited?
1 point
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