Determine the ratio of starting torque to full-load torque, Electrical Engineering

Assignment Help:

A three-phase, 400-V, wye-connected induction motor takes the full-load current at 45 V with the rotor blocked. The full-load slip is 4%. Calculate the tappings k on a three-phase autotransformer to limit the starting current to 4 times the full- load current. For such a limitation, determine the ratio of starting torque to full-load torque.

Related Discussions:- Determine the ratio of starting torque to full-load torque

What do you mean by conditional selection, Q. What do you mean by Condition...

Q. What do you mean by Conditional selection? Conditional selection: When a marker is instructed to create a connection from a given incoming trunk to a given outgoing trunk, t

Merits and demerits of collector-to-base bias, Merits and Demerits of Colle...

Merits and Demerits of Collector-to-base bias: Merits: In this type of circuit the circuit stabilizes the operating point against differences in temperature and β (that i

Three-phase induction motor, Q. A 60-Hz, six-pole, wye-connected, three-pha...

Q. A 60-Hz, six-pole, wye-connected, three-phase induction motor, with the parameters R 1 = R 2 = 0.025 and Xl 1 = Xl 2 = 0.125 , is controlled by variable-frequency control

Draw the circuit of a two stage rc coupled amplifier, Q. Draw the circuit o...

Q. Draw the circuit of a two stage RC coupled amplifier?

Write short note on a negative clamper, Q. Write short note on a negative c...

Q. Write short note on a negative clamper ? A circuit which places the negative peak of a signal at a desired level is known as a negative clamper (1). During the

Copy data byte 10h ldax instruction, Copy data byte 10H LDAX instruct...

Copy data byte 10H LDAX instruction Example : Copy data byte 10H stored at memory location 3020 H to the accumulator using LDAX instructions. Solution : To use

Dc machines, how unbalanced effect in wave winding is considered to be bala...

how unbalanced effect in wave winding is considered to be balanced?

Fundamental of metal casting, Fundamental of Metal Casting: Fundament...

Fundamental of Metal Casting: Fundamental of Metal Casting : Casting process is based on the property of a liquid to take up the shape of vessel containing it. Molten metal

Sr flip flop - introduction to microprocessors , SR Flip Flop The SR f...

SR Flip Flop The SR flip flop is an arrangement of logic gates that maintain astable output even after the input are turned off. It has two inputs namely SET input (S

Explain types of addressing modes, Problem: a) Explain types of "Addres...

Problem: a) Explain types of "Addressing Modes". b) What is the difference between "Rotate" and "Swap" Operations? c) A computer spends a lot of time in moving data from

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages