Calculate the efficiency of both the machines

Assignment Help Electrical Engineering

Reference no: EM131265798

The Hopkinson's test was performed at full load on two similar shunt machines. The test results are:

Line voltage = 110 V

Line current = 48 A,

Armative current = 230 A (motor)

Field currents = 3 A and 5 A

Armature resistance = 0.035 Ω (each)

Brush contact drop = 1 V per brush

Calculate the efficiency of both the machines.

Reference no: EM131265798

Questions Cloud

Describe the arguments for and against social responsibility : Explain the relationship between the global economy and social responsibility. - Defend the proposition that the only responsibility of the firm is to make money for the stockholders.

Explain in detail the slippery slope : Explain in detail the "slippery slope" and its relationship to gratuities, using examples. Explain each of the following theories regarding public corruption.

What is its required rate of return : Bouchard Company's stock sells for $20 per share, its last dividend was $1.00, and its growth rate is a constant 6%. What is its required rate of return?

Individual view of the us healthcare system : An individual's view of the U.S. healthcare "system" often depends on his or her personal experience (or lack of experience) with it.

Calculate the efficiency of both the machines : The Hopkinson's test was performed at full load on two similar shunt machines.

Prepare an adjusted journal entry : Prepare an adjusted journal entry for the following case: Purchased a 1-year malpractice insurance policy on January 1 for $24,840. The cost of the insurance policy was debited to the Prepaid Insurance account when purchased on January 1.

Examine the value of dicta to the judicial decisions : Identify the source(s) from which the authority to legislate is derived. Determine whether or not Congress has unreasonably and unlawfully expanded upon an identified source's authority to legislate. Provide a rationale for your response.

Explain controversy surrounding some cause related marketing : Why are more firms jumping on the cause-related marketing bandwagon? - Explain the controversy surrounding some cause-related marketing.

Calculate the efficiency of a 500 v shunt motor : Motor running at normal speed unloaded; the armature current was 22.5 A, when the applied voltage was 550 V; allow 2 V for brush contact drop and 1 % of the rated output of 400 kW for stray-load losses.

User Account

All Pages