What should be frequency if the motor has to develop torque

Assignment Help Electrical Engineering

Reference no: EM13293097

A 50 Hz, 440 V, 3-phase , 4-pole induction motor develops half the rated torque at 1490 r.p.m. with the applied voltage magnitude remaining at the rated value, what should be its frequency if the motor has to develop the same torque at 1550 r.p.m.? Neglect stator resistance, leakage reactance and iron losses.

Reference no: EM13293097

Questions Cloud

Determine the electric field amplitude inside inner cylinder : A coaxial transmission line consists of two concentric cylinders.The inner cylinder has radius r1 and the outer cylinder has radius r2. The inner cylinder has a surfacecharge density ρS C.m-2, that is uniformly distributed along its length.

Complete first-order reactions with rate constants : Why is this only an approximation? Under what conditions can the selectivityremain temperature-independent?

Explain what happens to expected return as beta increases : Financial researchers at Smith Sharon, an investment bank, esti- mate the current security market line as E(Ri) = 4.5 + 6.8(?i).

Define equilibrium system net ionic equation : Equilibrium system given: Fe3+(aq) + SCN- (aq) FeSCN2+(aq) Equilibrium system Net ionic equation? What are the net ionic equations for the following

What should be frequency if the motor has to develop torque : A 50 Hz, 440 V, 3-phase , 4-pole induction motor develops half the rated torque at 1490 r.p.m. with the applied voltage magnitude remaining at the rated value, what should be its frequency if the motor has to develop the same torque at 1550 r.p.m.

What is the expected change in each stock value : Stock market forecasters are predicting that the stock market will rise a modest 5 percent next year. Given the beta of each stock below, what is the expected change in each stock's value?

Find line current in primary of autotransformer at starting : An auto transformer is used to reduce the starting current and to give full load torque at starting .Neglecting no load current , determine : (a) Voltage applied at starting , (b) Full load line current (c) Current drawn by the motor at starting..

How far from her will the support be : a 30kg child wants to use a 20kg board that is 6.0m long as a seesaw. since all her friends are busy, How far from her will the support be

Is management acting in the shareholder best interest : Your company's management immediately begins fighting off this hostile bid. Is management acting in the shareholder's best interest? Why or why not?

User Account

All Pages