Question

3 phase, 4 pole 50 Hz An inspiration to motor With the help of prime mover RMF In the opposite direction of 3000 RPM If it is done with full speed, then tell What will be the slip of this motor?​

Answer 1

Iron metal is settling down at the bottom of the test tube. When ferrous sulphate is added to the iron-containing solution, then no change will be observed since metal is same, i.e. iron. So the green colour of FeSO4 disappears Fe metal is settling down at the bottom of the test tube. Hence the correct option is 4.

Answer 2

Answer:

In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be

A. 3000 r.p.m.

B. 1500 r.p.m.

C. 750 r.p.m.

D. none of the above

Answer: Option B

Explanation:

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