Calculate the starting torque and current

Assignment Help Electrical Engineering

Reference no: EM131265473

A 3-phase, 3.3 kV, 50 Hz, 10-pole, star connected induction motor has a no-load magnetizing current of 45 A and a core-loss of 35 kW. The stator and referred rotor standstill leakage impedances are respectively (0.2 + j 1.8) and (0.45 + j 1.8) Ω/phase. The motor is supplied from 3.3-kV mains through a line of reac tance 0.5 W/phase. Use approximate circuit model.

(a) The motor is running at 0.03 slip. Estimate the gross torque, stator current and power factor. Assume voltage at motor terminals to be 3.3 kV.

(b) Calculate the starting torque and current when the motor is switched on direct to line with voltage at far end of the line being 3.3 kV.

Reference no: EM131265473

Questions Cloud

How do formal reports differ from informal reports : How do formal reports differ from informal reports? - Discuss the three phases of the writing process in relation to formal reports.

Number of ideas for building the motivation of trainees : Describe a number of ideas for building the motivation of trainees before and during a program. What suggestions would you offer for ensuring that trainees are motivated to transfer their skills after they leave the training and are back at their ..

How do these services benefit the prisoners : Do the research findings support the establishment of more mental health service programs to imprisoned mentally ill populations? What can be done to improve these services further?

Roles of top management and middle managers : Describe the respective roles of top management and middle managers in the development of each of the following planning documents:the strategic plan - annual report - major project proposal - due diligence review.

Calculate the starting torque and current : A 3-phase, 3.3 kV, 50 Hz, 10-pole, star connected induction motor has a no-load magnetizing current of 45 A and a core-loss of 35 kW.

Discuss the workplace problem that you have identified : Discuss the workplace problem that you have identified. - Choose a relatively weighty problem that can nevertheless be lessened or eliminated with a minor expenditure.

Characteristics cognitive functioning-personality behavior : 1. What are five gender-related characteristics in cognitive functioning and personality behavior that affect learning? 2. How does the environment versus heredity influence gender-specific approaches to learning?

Find slip at maximum torque : A 75 kW, 440 V, 3-phase, 6-pole, 50 Hz, wound-rotor induction motor has a full- load slip of 0.04 and the slip at maximum torque of 0.2 when operating at rated voltage and frequency with rotor winding short-circuited at the slip-rings. As sume the..

Develop plan to manage information as key strategic resource : Develop a plan to create the electronic structure of health data to meet a variety of end user needs by investigating at least five (5) key challenges with data information and file structures (i.e., data administration, data definitions, data dic..

User Account

All Pages