The speed of a dc machine is doubled

Assignment Help Electrical Engineering
Reference no: EM13887714

[1] If the speed of a DC machine is doubled and the flux remains constant, the generated e.m.f.

(a) remains the same

(b) is doubled

(c) is halved

(d) None of the above

 

 

Reference no: EM13887714

Questions Cloud

Explains cross-country differences : In Greece, the participation rate (as percentage of working-age population) in 1998 for men aged 15-24 was 44.3%; aged 24-54, 94.2%; and aged 55-64, 57%. For the United States, these numbers were 68.4%, 91.8%, and 68.1%
Why ms h must pay interest : Nevertheless, Ms. H did make an error in her favor. When she received formal notification that she owed an additional $4,350 tax, she was dismayed that the IRS also billed her for $920 interest on the deficiency. She doesn't understand why she must p..
Partial discharge in the switchgear necessary : Why is Continuous On-line Monitoring of Partial Discharge in the Switchgear Necessary?
Explain bases for comparison and factors affecting quality : Kyle Benson is the CEO of Macarty's Electronics. Benson is an expert engineer but a novice in accounting. Write a letter to Kyle Benson that explains the bases for comparison and factors affecting quality of earnings.
The speed of a dc machine is doubled : [1] If the speed of a DC machine is doubled and the flux remains constant, the generated e.m.f. (a) remains the same (b) is doubled
What pattern of cross-country growth will this produce : Draw the MPK schedule so that, over a certain initial range of capital, there is increas- ing MPK and then this is followed by diminishing MPK until the MPK declines to a level higher than that achieved in poor countries. What pattern of cross-cou..
What are the benefits of high and medium voltage : What are the benefits of high and medium voltage SF6-switchgear?
Prepare a collective inference that may be drawn from items : Then prepare a collective inference that may be drawn from the individual items about Bonita's solvency and going-concern potential.
What are the tax consequences of this rental arrangement : Betsy and Larry Lorch own and reside in an apartment in midtown Manhattan. They left the city to avoid the uproar surrounding New Year's Eve and spent a long holiday with Larry's parents in upstate New York. They sublet their apartment to a German co..

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Find matching circuit consist of ideal capacitor nd inductor

For a complex load of 30 - 50 j ohm. find the matching circuit consist of ideal capacitor and/or inductor to match the load to 50 ohm impedance at 2GHz. The solution should include circuit schematic and values of each component.

  Provide values of the resistors

The below circuit has an output 10 times the difference between the 2 input signals. Show how this could be realised using 2 Operational Amplifiers and 5 Resistors, and provide values of the resistors

  Find the poles and zeros of x and plot them in the z- plane

a.) Plot x[n] as a function of n and use the definition of the z - transform to find x[z]. b.) Use the z - transform of u[n] and properties of the z - transform to find x[z]. Verify that the expressions obtained above for x[z] are identical.

  Design by direct implementation the electronic circuits

Design by direct implementation the electronic circuits for equations as the following logic equations using any real 1, 2, or 3 input logic gates. Assume all signals are high true (positive logic) and do not simplify the equations.

  Q1 for the given circuit determine v2 and ilq2 determine

q1. for the given circuit determine v2 and ilq2 determine the phase relation between vo and ig for the given network if

  What transmitter powers are needed at each transmitters

Assuming a 24 dB link margin is needed to account for fading and loss due to heavy rainfall on the longest link, while 12 dB link margin is sufficient for the shorter link, what transmitter powers are needed at each of the four transmitters

  Calculate primary voltage required and voltage regulation

Three single phase 2400v/240v transformers are connected for operation as a 4160/240 v 3phase bank. Each transfomers has a Zeq1=1.42+j1.82 ohms and rated at 150kva

  An mos transistor is fabricated on a p-type silicon

an mos transistor is fabricated on a p-type silicon substrate with na2x1015 cm-3. the oxide thickness is tox450a and

  What is the score on the test that is the cutoff value

For a certain population of students taking the Miller Analogy test, it is found that the scores are normally distributed with a mean of 50 and a standard deviation of 5. What is the score on this test that is the cutoff value for the top 12 perce..

  Calculate the value of the resistance that should be added

A 15 hp, 209V,three-phase,six pole, Y-connected induction motor has the following parameter values per phase: R1= 0.128 ohm, R'2=0.0935 ohm Xeq- X1 + X'2 = 0.49 ohm. The motor slip at full load is 3%, and the efficiency id 90%.

  Write down the equation for the current as a sine function

A sinusodial current has an amplitude of 5A. It has a scalar frequency of 60 Hz. The signal has a current of 5A when t=0s. Write down the equation for the current as a sine function of time (I.E.- Using the sine function)

  Determine what is the frequency response of the system

The unit step response of a linear time invariant system is s(t) = (1 - e-at)u(t). Where "a" is a positive, real valued constant. What is the impulse response of the system. What is the frequency response of the system.

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