Electrical transmission into mechanical power

Assignment Help Physics
Reference no: EM13647567

A 120-V motor has mechanical power output of 2.10 hp. It is 80.0% efficient in converting power 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 electricaltransmission in 2.50 h of operation.
c) If the electric company charges $0.160/kWh, what does it costto run the motor for 2.50 h?

Reference no: EM13647567

Questions Cloud

What is the new resistance of the wire : A wire of initial length L0 and radiusr0 has a measured resistance of 4.0 . The wire isdrawn under tensile stress to a new uniform radius of r =0.45r0. What is the new resistance of the wire?
Component of the longer vector along line of the shorter : Two vectors have magnitudes of 10m and 15 m. The angle between themwhen they are drawn with their tails at the same point is65?. What is the component of the longer vector along the line of the shorter?
Toy racing car moves with constant speed around the circle : A toy racing car moves with constant speed around the circle. Whenits coordinates are x = 0, y = 3m its velocity is(6m/s)i. When it is at x= -3m, y= 0m what is itsvelocity and acceleration (use i, j, k notation togive your answer)?
The typical operating voltage for anelectron microscope : The typical operating voltage for anelectron microscope is V =50kV. (a) What isthe smallest feature one could hope toresolve? (b) What isthe equivalent resolution if neutrons are used?
Electrical transmission into mechanical power : A 120-V motor has mechanical power output of 2.10 hp. It is 80.0% efficient in converting power that it takes in by electrical transmission into mechanical power.
A nickel surface is exposed to light of wavelength : A nickel surface is exposed to light of wavelength235 nm. The work function of Ni is 5.1 eV. What is the maximum speed of the photoelectrons emitted from the surface?
What is the length of an interatomic bond in magnesium : A hanging magnesium wire with diameter0.13 cm is initially 2.0 m long. When a 28kg mass is hung from it, the wire stretches an amount 1.03 cm. A mole of magnesium has a mass of 24 grams, and its density is 1.74 g/cm3.
What average voltage is induced in the coil : A uniform magnetic field perpendicular to its plane is turned onand increases to 0.25 T during an interval of 1.0 s. What average voltage is induced in thecoil?
Perpendicularto a uniform magnetic field : A proton moving with a speed of 3.0 × 105 m/s perpendicularto a uniform magnetic field of 0.20 T will follow which type of path (include radius in answer ifapplicable)? (qp = 1.6 × 10−19 C and mp = 1.67 × 10−27 kg)

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude of the resulting magnetic field

A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.

  Find the equivalent resistance

A resistor is in the shape of a cube, with each side of resistance  R . Find the equivalent resistance between any two of its adjacent corners.

  What is the electric field at the location

Question: Field and force with three charges? What is the electric field at the location of Q1, due to  Q 2 ?

  What is the maximum displacement of the bridge deck

What is the maximum displacement of the bridge deck?

  What is the magnitude of the current in the wire

What is the magnitude of the current in the wire as a function of time?

  Blackbody

Questions on blackbody, Infra-Red Detectors & Optic Lens and Digital Image.

  Gravity conveyor

Illustrate the cause of the components accelerating from rest down the conveyor.

  Calculate the dc voltage

Calculate the dc voltage applied to the circuit.

  Quadrupole moments in the shell model

Quadrupole moments in the shell model

  Determine the tension in each string

Determine the tension in each string

  Introductory mechanics: dynamics

Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.

  Evaluate maximum altitude

Evaluate maximum altitude?

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