How large is ea at the motor rated conditions

Assignment Help Electrical Engineering

Reference no: EM13967431

1. If a 60-Hz synchronous motor is to be operated at 50 Hz, will its synchronous reactance be the same as at 60 Hz, or will it change? (Hint: Think about the derivation of XS .)

2. A 480-V 100-kW 0.85-PF leading 50-Hz six-pole Y-connected synchronous motor has a synchronous reactance of 1.5Ω and a negligible armature resistance. The rotational losses are also to be ignored. This motor is to be operated over a continuous range of speeds from 300 to 1000 r/min, where the speed changes are to be accomplished by controlling the system frequency with a solid-state drive.

(a) Over what range must the input frequency be varied to provide this speed control range?

(b) How large is EA at the motor's rated conditions?

(d) What is the largest EA could be at 300 r/min?

(e) Assuming that the applied voltage Vf is derated by the same amount as EA , what is the maximum power the motor could supply at 300 r/min?

(f) How does the power capability of a synchronous motor relate to its speed?

Reference no: EM13967431

Questions Cloud

Draw connections within social media and technology : draw connections within social media and technology between learning and business communication. How does the "learning" theory transfer to the networked world for business?

Point price elasticity of demand : Illustrate the relation between the optimal markup on price and the point price elasticity of demand.

Optimal markup on cost and the point price : Identify and interpret the relation between the optimal markup on cost and the point price elasticity of demand.

Markup-on-cost and markup-on-price formulas : Develop and explain the relation between the markup-on-cost and the markup-on-price formulas.

How large is ea at the motor rated conditions : If a 60-Hz synchronous motor is to be operated at 50 Hz, will its synchronous reactance be the same as at 60 Hz, or will it change? (Hint: Think about the derivation of XS .)

Discuss risk methodologies used in capital budgeting. : Do you believe that there was sufficient financial information to make a solid decision on what to do?

Question regarding the nonprice competition : General Cereals, Inc. (GCI), produces and markets Sweeties!, a popular ready-to-eat breakfast cereal. In an effort to expand sales in the Secaucus, New Jersey, market, the company is considering a 1-month promotion whereby GCI would distribute a c..

Define applicable legal social doctrine or customs : Identify any relevant laws (these may be social, traditional, or legal) utilized by the court/authority in considering or determining the outcome of the case. Define applicable legal/social doctrine or customs, provisions of the law or custom, and..

What are international accounting standards : What are international accounting standards? What is Generally Accepted Accounting Practices (GAAP)? Demand analysis and optimal pricing.

User Account

All Pages