State why three phase induction motor never runs on synchronous speed.

Draw the power flow diagram of three phase induction motor.
Answer : The power flow diagram of a three-phase induction motor shows how electrical power is transformed into mechanical power and how it is distributed through various stages of the motor. Here's a ... motor. The input power is used to produce mechanical power, with losses occurring at various stages....

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Draw the torque slip characteristics of three phase induction motor.

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Three phase induction motor is known as generalized transformer. Justify.

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Draw neat diagram of star-delta starter for three phase induction motor.

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Define Rotor frequency and slip of three phase induction motor.

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What is the difference between a single-phase and a three-phase induction motor?

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State the function of centrifugal switch in single phase induction motor.

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State the principle of a 3-phase induction motor.

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What is the maximum speed of a synchronous motor?

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What is the speed of a synchronous motor?

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Why does a single-phase induction motor not self-start?

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What is the speed variation of the induction motor from no load to full load?

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How does the frequency of the power supply influence the speed of an induction motor?

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How does load affect the speed of an induction motor?

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How is the speed of an induction motor controlled?

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Explain hunting and phase swinging in synchronous motor.

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Where is 3 phase synchronous motor used?

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What is the construction and working principle of single phase synchronous motor?

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A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of the protective transformers on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of ... on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

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A 220V/22kV three-phase transformer is connected in star/delta. The protective transformers on the 220V side have a current ratio of 400/5. Calculate the CT ratio on the 22kV side.

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Describe the method of converting a three-phase to a two-phase transformer by neat diagram. State any two applications.

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State any four advantages of having stationary armature in case of three phase alternator.

State any four advantages of having stationary armature in case of three phase alternator.
Answer : In a three-phase alternator, having a stationary armature (i.e., the armature is fixed and the rotor rotates) provides several advantages: 1. **Simplified Design**: A stationary ... seen in machines with rotating armatures. This leads to lower maintenance requirements and longer operational life....

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How does a synchronous motor differ from an induction motor?

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Distinguish between an induction motor and a synchronous motor.

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What is the difference between induction motor and synchronous motor?

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DC series motor should never be started at no load. Justify.

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Explain the effect of variable excitation on the behaviour of synchronous motor under constant load condition.

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State working principle of operation of synchronous motor.

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Explain hunting in synchronous motor. State its causes and effects.

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State methods of starting of synchronous motor.

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Compare the MCCB with ELCB on any three points. State the application of the RCBO.

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How do you wire a three-phase motor for industrial applications?

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What is the principle of single phase induction motor?

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What is the formula for 3-phase induction motor?

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What is the principle of 3-phase induction motor?

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How does a single-phase induction motor start?

How does a single-phase induction motor start?
Answer : A single-phase induction motor starts using a method that helps create a rotating magnetic field, which is essential for initiating rotation. In a single-phase system, there's only one alternating ... picks up speed, the auxiliary winding is disconnected, and the motor runs on the main winding....

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