A 100 hp, 440 volt, three-phase, 60 Hz induction motor operates with 92 percent efficiency and a power factor of 0.85 at rated load. What is the current of the motor? A. 105 A B. 115 A C. 125 A D. 135 A
Added by Casey C.
Step 1
1 horsepower is equal to 746 watts. So, 100 hp is equal to 100 * 746 = 74600 watts. Show more…
Show all steps
Close
Your feedback will help us improve your experience
Sri K and 75 other Physics 102 Electricity and Magnetism educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A 400 V, 7.46 kW, 3-phase synchronous motor has a synchronous reactance of 10 ohms per phase and negligible resistance. Assuming a wye-connected armature, the minimum current (for minimum current the power factor is unity) for full load condition, the full load efficiency being 85% is ________. a. 12.67 b. 16.27 c. 17.62 d. 17.26
Adi S.
A 5-hp 60-cycle 115-volt eight-pole three-phase induction motor was tested. The following data were obtained: No-load test: VNL = 115 V P1 = 725 W P2 = -425 W INL = 10 A Load test: VL = 115 V P1 = 3,140 W P2 = 1,570 W IL = 27.3 A rpmrotor = 810 D-c stator resistance between terminals = 0.128 ohm Calculate: (a) The horsepower output (b) The torque (c) The percent efficiency (d) The power factor of the motor for the given load values.
A 3-phase 75 hp, 440V induction motor has a full efficiency of 91% and a power factor of 83%. Calculate the nominal current per phase.
Madhur L.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD