Calculate the no-load rotor speed

Assignment Help Mechanical Engineering
Reference no: EM131198096

The power input to a dc shunt motor during rated-load conditions is 100 W. The rotor speed is 2000 r/min, and the armature voltage is 100 V. The armature resistance is 2 Ω and R f = 200 Ω . Calculate the no-load rotor speed.

Reference no: EM131198096

Questions Cloud

Calculate the steady-state rotor speed : The parameters of a dc shunt machine are Rf = 240 Ω, LFF = 120 H, LAF = 1.8 H, ra = 0.6 Ω, and LAA = 0. The load torque is 5 N·m and Va = Vf = 240 V. Calculate the steady-state rotor speed.
Derive the equation from demand curve : 1. Derive the equation from your demand curve from the two price and sales points. 2. Are you currently operating in the elastic or inelastic portion of your demand curve? 3. You are paid a sales commission based on your total sales. What price would..
Draw the linear production possibilities frontier : Vulcan can produce 15 tons of macadamia nuts if it produces no bananas or 30 tons of bananas if it produces no macadamia nuts. Use the line drawing tool to draw the linear production possibilities frontier that illustrates this trade-off between prod..
Demonstrate meaning of setting out as used engineering : Demonstrate meaning of setting out as used engineering.
Calculate the no-load rotor speed : The rotor speed is 2000 r/min, and the armature voltage is 100 V. The armature resistance is 2 Ω and R f = 200 Ω . Calculate the no-load rotor speed.
Comparative advantage in lawn mowing : Once again, in an hour, David can washcars or mowlawn, and Ron can washcars or mowlawn. Who has the comparative advantage in car washing, and who has the comparative advantage in lawn mowing?
Relationship between the number of workers : In a diagram that has the number of workers on the horizontal axis and the number of shoes on the vertical axis, the relationship between the number of workers and the number of shoes starts as ________ and then, after the maximum point, is ______..
Big ben taxis and whitehall taxis : What is the highest fee that the government can charge for a license, if the government wants both Big Ben Taxis and Whitehall Taxis to purchase a license? (Note: A licence does not place a limit on the number of taxi trips a company can supply. Y..
Find the standard time for this operation : An analyst has timed a metal-cutting operation for 50 cycles. The average time per cycle was 10.40 minutes, and the standard deviation was 1.20 minutes for a worker with a performance rating of 125 percent. Assume an allowance of 16 percent of job ti..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Determine the velocity of the water issuing from the

the closed tank is pressurized at 15 psig by air as shown. the liquid is water. determine the velocity of the water

  Draw the shear and moment diagrams for members

Draw the shear and moment diagrams for members AB and AF. Sketch the deflected shape, and determine the deflection at midspan

  If the net power out is 70mw determine the mass flow rate

an ideal brayton cycle uses air as the working fluid and has a pressure ratio of 12. the compressor inlet temperature

  Estimate by what percent the average air-water density is

the presence of raindrops in the air during a heavy rainstorm increases the average density of the air-water mixture.

  Calculate the form of the response and plot

Calculate the form of the response and plot it for as long as it takes to die out. How long does it take to die out?

  Tese cutting parameters should result in a tool life of t

the following parameters are used for medium machining of low-alloy stell with a brinell hardness of 180cutting depth

  Calculate the vapor pressure-temperature relationship

calculate the vapor pressure-temperature relationship of liquid iron.

  Calculate the cost per piece of a milling operation that is

calculate the cost per piece of a milling operation that is used to machine a pocket of 2x3x0.5 lxwxd. the material

  What is the new value of keff

A certain u-235 fueled pressurized water reactor is just critical. Suddenly the average coolant temperature falls from 300c to 280c \alphat=-0.0001 \deltak/c. How much reactivity is inserted? What is the new value of keff?

  If heat transfer from the heat exchanger to its

steam enters a heat exchanger operating at steady state at 250 kpa and a quality of 90 and exits as saturated liquid at

  Determines work done and heat transfer

For the cylinder-piston shown, piston is initially resting on the lower stops. The cylinder contains 1 kg of water at 1 bar and x = 0.64. A pressure of 3 bars is required to move the piston. The system is now heated until the water reaches 600° C. Sh..

  We have calculated 32 nodes throughout the whole wall and

we are building a fire proof safety box that can withstand a 700c fire for two hours and not allow the inside of the

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