Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jan 18, 2021

A 20-hp, 110 V DC shunt motor has an efficiency of 88% an exciting current of 4 amperes, and an armature resistance of 0.04 ohm.

A 20-hp, 110 V DC shunt motor has an efficiency of 88% an exciting current of 4 amperes, and an armature resistance of 0.04 ohm. What starting resistance is required for full-load torque?

A). 0.98 ohm
B). 0.94 ohm
C). 0.95 ohm
D). 0.69 ohm

Step by Step Solution

★★★★★

3.38 Rating (151 Votes )

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Document Format ( 2 attachments)

635dfd3a034f8_180543.pdf

180 KBs PDF File

635dfd3a034f8_180543.docx

120 KBs Word File

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Engineering Economy

Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling

15th edition

132554909, 978-0132554909

More Books

Students also viewed these Electrical Engineering questions

Question

★★★★★

A special-purpose 30-horsepower electric motor has an efficiency of 90%. Its purchase and installation price is $2,200. A second 30-horsepower high-efficiency motor can be purchased for $3,200, and...

Answered: 1 week ago

Question

★★★★★

A 25-kW, 230-V shunt motor has an armature resistance of 0.064 and a field-circuit resistance of 95. The motor delivers rated output power at rated voltage when its armature current is 122 A. When...

Answered: 1 week ago

Question

★★★★★

A 75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a highefficiency motor that has an efficiency of 95.4 percent. The motor operates 4368 hours a...

Answered: 1 week ago

Question

★★★★★

In a perpetual inventory system: (a) LIFO cost of goods sold will be the same as in a periodic inventory system. (b) average costs are a simple average of unit costs incurred. (c) a new average is...

Answered: 1 week ago

Question

★★★★★

Karim Soltan is shopping for a new vehicle, and has noticed that many vehicle manufacturers are offering special deals to sell off the current years vehicles before the new models arrive. Karims...

Answered: 1 week ago

Question

★★★★★

Darla's Cosmetics had annual credit sales of $1,003,750 and an average collection period of 36 days in 2015. What was the company's average accounts receivable balance?

Answered: 1 week ago

Question

★★★★★

What can practitioners in the investment industry learn from research findings on money and happiness?

Answered: 1 week ago

Question

★★★★★

Marine Components produces parts for airplanes and ships. The parts are produced to specification by their customers, who pay either a fixed price (the price does not depend directly on the cost of...

Answered: 1 week ago

Question

★★★★★

Compare and contrast the bond and equities markets. (hint: risk in each)

Answered: 1 week ago

Question

★★★★★

The majority of forensic accounting practice involves the valuation of some type of damages or value of a business. Economic damages are a salient service provided by forensic accountants. Lost...

Answered: 1 week ago

Question

★★★★★

What is Hue and saturation?

Answered: 1 week ago

Question

★★★★★

John Parsons (123-45-6781) and George Smith (123-45-6782) are 70% and 30% owners, respectively, of Premium, Inc. (11-1111120), a candy company located at 1005 16th Street, Cut and Shoot, TX 77303....

Answered: 1 week ago

Question

★★★★★

How imperative is conducting research on the target and ensuring that the proper customers are communicated to? HaHowtherightw many companies fail to hone in on th eright consumer?

Answered: 1 week ago

Question

★★★★★

5. A transmission shaft is supported between two bearings, with distance 750 mm. Power is supplied to the shaft and transmitted to belt pulley, 450 mm diameter, which is located at a distance of 200...

Answered: 1 week ago

Question

★★★★★

the Community Senior Services (C S S) intervention case (each "Spotlight" included in the chapter) is viewed primarily as a project because a. it seeks policy change. b. it is a shorter term than a...

Answered: 1 week ago

Question

★★★★★

1) The per unit price sold to distributors will be $0.80, regardless of country or quantity sold. (2) The estimated market share for sales depends on how much a segment sees health and wellness as...

Answered: 1 week ago

Question

★★★★★

( 1 5 ' ) AVL Trees Construct an AVL tree by inserting the input array { 1 3 , 2 5 , 5 8 , 8 0 , 1 5 , 8 2 , 6 , 6 5 , 2 9 , 7 0 , 6 8 } . Draw the three trees after inserting the last three...

Answered: 1 week ago

Question

★★★★★

What are the three kinds of research types? Explain each type.

Answered: 1 week ago

Question

★★★★★

. A hydraulic press was installed 10 years ago at a capital investment cost of $70,000. This press presently has a market value of $14,000. If kept, the press has an economic life of three years,...

Answered: 1 week ago

Question

★★★★★

Four mutually exclusive projects are being considered for investment. The life of the projects is expected to be 80 years. The sponsoring agency's MARR is 12% per year. Data for the projects are as...

Answered: 1 week ago

Question

★★★★★

A firm is considering three mutually exclusive alternatives as part of an upgrade to an existing transportation network. At EOY 10, alternative III would be replaced with another alternative III...

Answered: 1 week ago

Question

★★★★★

7. How does testosterone infl uence emotional and cognitive responses to a facial expression of anger?

Answered: 1 week ago

Question

★★★★★

10. What change in diet can alter the production of serotonin?

Answered: 1 week ago

Question

★★★★★

9. Given that monkeys with low serotonin turnover pick many fi ghts and in most cases die young, what keeps natural selection from eliminating the genes for low serotonin turnover?

Answered: 1 week ago

Previous Question Next Question