PLEASE GIVE THE FULL DETAILS OF THE STEPS ON EACH QUESTIONS SO I COULD FOLLOW UP

Question

PLEASE GIVE THE FULL DETAILS OF THE STEPS ON EACH QUESTIONS SO I COULD FOLLOW UP YOUR WHOLE EXPLANATIONS.

PLEASE WRITE THE STEPS ON SOLVING THIS EXAMPLE

EX) STEP 1, STEP 2, ETC

HANDWRITING IS OKAY AS LONG AS IT IS READABLE.

IF YOU HAVE USED THE EQUATIONS OR CONCEPTS, PLEASE STATE IT CLEARLY WHICH ONE YOU HAVE YOU USED SO I COULD FULLY UNDERSTAND THE DETAILS OF THE STEPS YOU HAVE DONE.

PLEASE DO NOT OMIT THE DETAILS OF STEPS AND CONCEPTS YOU HAVE USED, CLEARLY STATE IT!!

What is a difference between syncronous and asynconous machine?

Please give specific examples and problem related.

Explanation / Answer

What is a difference between Synchronous and Asynchronous machine?

(i) Synchronous motor is a machine whose rotor speed and the speed of stator magnetic field is equal.

Asynchronous motor is a machine whose rotor rotates at the speed less than the synchronous speed.

(ii) Synchronous motor does not have slip. The value of slip is zero.

Asynchronous motor has slip. Therefore, the value of slip is not equal to zero.

(iii) Synchronous motor is costly as compared to Asynchronous motor.

(iv) Efficiency of Synchronous motor is greater than Asynchronous motor.

(v) Synchronous motor is not self starting whereas Asynchronous motor is self starting.

(vi) Synchronous motor operates smoothly and relatively good at low speed that is below 300 rpm, whereas Asynchronous motor operates at high speed that is above 600 rpm.

(vii) Current is given to the rotor of synchronous motor whereas the rotor of Asynchronous motor does not require any current.

(viii) Change in applied voltage does not affect the torque of synchronous motor, whereas it affect the torque of Asynchronous motor.

One example of a synchronous motor is the "stepping motor" which widely used in applications that involve position control. One example of asynchronous motor is "Centrifugal Pump" which widely used in buildings for pumping the general water supply, as a booster and for domestic water supplies.

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