Physics, 05.12.2019 23:31 xojade

A420 vll, 60 hz, 3-phase, y-connected, 4 pole induction motor is running at rated voltage and current. the rotor speed is 1720 rpm. the stator resistance and leakage reactance may be neglected. when the motor runs at no load, the speed is approximately 1800 rpm and the stator line current (magnitude) is 5 amps. the rotor resistance referred to the stator (rr) is 0.8 ohms. the rotor leakage reactance referred to the stator (xir) is 2.0 ohms.
(a) what is the frequency of the rotor current at this operating point (1720 rpm)?
(b) what is the rated line current magnitude?
(c) what is the starting line current magnitude if started at full rated voltage?
(d) what is the rated torque?
(e) what is the maximum possible torque this motor can deliver?
(f) what is the rotor speed (in rpm) at which this maximum torque occurs?

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 08:00

What is the rate of change in a objects position?

Answers: 1

Answer

Physics, 22.06.2019 09:00

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Answers: 1

Answer

Physics, 22.06.2019 12:00

It is really hard for me right know

Answers: 1

Answer

Physics, 22.06.2019 12:50

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)

Answers: 2

Answer

You know the right answer?

A420 vll, 60 hz, 3-phase, y-connected, 4 pole induction motor is running at rated voltage and curren...

Questions