Energy delivered to the motor by electrical transmission

Assignment Help Physics
Reference no: EM13654205

A 120-V motor has mechanical power output of 3.00 hp. It is 83.0% efficient in convertingpower that it takes in by electrical transmission into mechanical power.

a) Find the current in the motor?
b) Find the energy delivered to the motor by electrical transmission in 2.00 h of operation.
c) If the electric company charges $0.160/kWh, what does itcost to run the motor for 2.00h ?

Reference no: EM13654205

Questions Cloud

What angle to the normaldoes the ray leave the slab : Suppose the ray, in air with n =1.00, enters a slab with n = 2.34 at a 30.9°angle with respect to the normal, then exits the bottom of the slabinto water, with n = 1.33. At what angle to the normaldoes the ray leave the slab?
Determine both the horizontal and vertical components : A 2.0-kg ball attached to a string whose length is 1.5m movescounterclockwise (as viewed from above) in a horizontalcircle. The string makes an angle θ= 30o withthe vertical.
The images of astronomical and terrestrial telescopes : The images of astronomical and terrestrial telescopes are colored around the edges. Explain that. How can this "chromaticaberration" be avoided in practice?
Mass potato is dropped from a height : A 100 gram mass potato is dropped from a height of 50 m. A knife with the sharp side (0.1mm) facing upwards is placed 1 m above the ground. Apparently potato stuck in the knife. Could potato will be split by the knife if it placed in a certain hig..
Energy delivered to the motor by electrical transmission : A 120-V motor has mechanical power output of 3.00 hp. It is 83.0% efficient in convertingpower that it takes in by electrical transmission into mechanical power.
Find the magnitude of the currenti : A solenoid of n=100 turns per centimeterhas a current i running in it suchthat the resulting magnetic field is B=1T. Find the magnitude of the currenti.
What is the wavelength of the emitted photon : The electron of a hydrogen atom makes a transition from the n= 5 state to the n = 2 state. What is the wavelength of the emitted photon?
After a snow storm the roof on one house : After a snow storm, the roof on one house, H1, isuniformly covered by snow, whereas at the house next door, H2, the snow has completely melted off. A likely reason for this is:
Engine is independent of velocity and neglecting friction : A car accelerates from 0 to 30 mph in 1.5s.  How long does it take for it to accelerate from 0 to 60 mph, assuming the power of the engine is independent of velocity and neglecting friction?

Reviews

Write a Review

Physics Questions & Answers

  Find the increase in temperature of the bullet

A 6.10 g lead bullet traveling at 310 m/s is stopped by a large tree. what is the increase in temperature of the bullet

  What is the strain in the post when the load is applied

A vertical solid steel post 24.0cm in diameter and 2.50m long is required to support a load of 8100 kg. You may ignore the weight of the post. What is the strain in the post when the load is applied

  Calculate the charge per unit area on the plastic sheet

A 10.0-g piece of Styrofoam carries a net charge of -0.700 ?C and suspended in equilibrium above the center of a large, What is the charge per unit area on the plastic sheet

  What was the average electric current during that interval

A charge of 810 C was passed through a wire in 5.70min. What was the average electric current during that interval

  Find the amplitude of motion

At a factory, a noon whistle is sounding with a frequency of 491 Hz. As a car travelling at 78 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..

  Determine at what time does the wheel stop

At time t=0 a grinding wheel has an angular velocity of 22.0 rad/s. It has a constant angular acceleration of 32.0 rad/s^2 until a circuit breaker trips at time t = 2.00 s. At what time does the wheel stop

  What velocity did the ball leave the muzzle

A cannon is fired horizontally from atop a 40.0 m tower. Thecannonball travels 145 m horizontally before it strikes the ground.With what velocity did the ball leave the muzzle.

  What is the minimum separation the plates can have

A potential difference of 4.75 kV is established between parallel plates in air. what is the minimum separation the plates can have without ionizing the air

  What is the longest possible wavelength for a standing wave

A string fixed at both ends is 5.8 m long and has a mass of 0.21 kg. It is subjected to a tension of 120 N and set oscillating. (a) What is the speed of the waves on the string? (b) What is the longest possible wavelength for a standing wave? (c) Giv..

  Find what frequency does the motorcyclist hear

A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 502 Hz and has a speed of 27.0 m/s. What frequency does the motorcyclist hear

  What are the velocity and the acceleration of the ball

A ball is thrown vertically upward from the Earth's surface. what are the velocity and the acceleration of the ball

  How many days does it take for a perfect blackbody cube

How many days does it take for a perfect blackbody cube (0.0206 m on a side, 66.9 °C) to radiate the same amount of energy that a one-hundred-watt light bulb uses in one hour?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd