What happens when an ac supply is given to a dc machine

Assignment Help Electrical Engineering
Reference no: EM13255875

1) Which has greater efficiency DC Machine operating as MOTOR or GENERATOR ?

2) What happens when an AC supply is given to a DC Machine ? Explain

Reference no: EM13255875

Questions Cloud

Determine he peak value of the electric field : A light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 6 m from the bulb, determine he peak value of the electric field
Determine at what t is the rate of return largest : The trees can be harvested early at reduced yield: the net profit is then $250T per $1,000 initial investment, for T in years. To the nearest whole year, at what T is the rate of return largest
Explain the xenon-hydrogen bond to exist : They hydrogen atom is not actually electronegative enough to form bonds to xenon. Were the xenon-hydrogen bond to exist, what would be the structure of XeH4
Determine the difference between the two frequencies : Two radio waves are used in the operation of a cellular telephone. To receive a call, the phone detects the wave emitted at one frequency by the transmitter station or base unit. determine the difference between the two frequencies used in the oper..
What happens when an ac supply is given to a dc machine : 1) Which has greater efficiency DC Machine operating as MOTOR or GENERATOR  2) What happens when an AC supply is given to a DC Machine
What is the company cost of capital : A company is 30% financed by risk-free debt. The interest rate is 8%, the expected market risk premium is 6%, and the beta of the company's common stock is 0.69.
What is this distance in meters : In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year
How is the theory related tojuvenile status offenders : How is the theory related tojuvenile status offenders and how is the theory related toviolent adult offenders? Explain.
Why does the tax rate for a comprehensive consumption tax : Why does the tax rate for a comprehensive consumption tax that is designed to replace an equal-yield comprehensive income tax have to be higher than the income tax rate? What is the impact on savings and excess burden in the investment markets?

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Determine the horsepower output and efficiency

A three-phase, four-pole, 50-hp, 480-V, 60-Hz, Y-connected induction motor has the following parameters per phase: r1 = 0.10  , x1 = 0.35  , r2' = 0.12  , x2' = 0.40  . It is known that the stator core losses amount to 1200 W and the rotational lo..

  Determine the phase angle between the inverter

Determine the phase angle between the inverter fundamental voltage,VC1, and grid side voltage such that the power delivered to the grid is 10 kW and the fundamental current leads VS by 150°. Calculate the reactive power to the grid and draw the ph..

  Determine when both channels are set to minimum gain

suppose that you have a balanced stereo signal in which the left and right channels have the same voltage amplitude 500 mVpp. This time, however, you want to be able to mix these two channels into a single inverted output

  Find the conditional expected value of x in problem given

Two transmitters send messages through bursts of radio signals to an antenna. During each time slot each transmitter sends a message with probability 1/2. Simultaneous trans- missions result in loss of the messages.

  Declare and initialize a double variable payrate

Write C++ statements that accomplish each of the following: a. Declare and initialize int variables x to 25 and y to 18. b. Declare and initialize an int variable temp to 10 and a char variable ch to 'A'. c. Add 5 to the int variable x which alrea..

  Find the cost of charging the battery for 5-hours

An automobile battery is charged with a constant current of3.75A for5hours. The terminal voltage of the battery isv= 11 + 0.5tVfort> 0, wheretis in hours.(a) Find the energy delivered to the battery during the5hours

  Find internal power developed by motor when it is operating

A star connected synchronous motor at 187 kVA, 3-V, 2300V, 47A, 50Hz, 187.5 rpm has an effective resistance of 1.5 ohm and a synchronous reactance of 20 ohm per phase. Determine internal power developed by the motor when it is operating at rated c..

  Explain moore sequential circuit

Moore sequential circuit, A Moore sequential circuit has one input and one output.The output goes to 1 when the input sequence 111 has occurred and the output goes to 0 if the input sequence

  How the signals were changed to a power level

A typical method of measuring the linearity of an amplifier is called the "Two-tone" test. Signals at f1 and f2 are input to the amplifier and the output spectrum is observed. Assuming that signals at 14.1 and 14.2 MHz are input to an amplifier.

  Determine what will the thickness be after 100 hours

A candidate material for a turbine blade application oxidizes by diffusion of metal atoms through the oxide to the metal surface, where metal and oxygen react to form the oxide. After 10 hours at 550*C, an oxide layer 8µm thick has formed.

  Define a three single phase transformers with a turns ratio

Three single phase transformers with a turns ratio of 1:1 are connected to form a three phase transformer. The transformer input is a three wire three phase 120V (line-to-line) system. the transformer output supplies a "Y" connected three phase lo..

  Explain when the bowling ball is placed on the spring

A bowling ball is placed on a coil spring. The spring constant is 400N/m. When the bowling ball is placed on the spring, the spring compresses down 0.1m. If the spring is vertical how far will the bowling ball go

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