AUTOMOTIVE TECHNOLOGY-NATEF TASK SHEETS
6th Edition
ISBN: 9780135257418
Author: Halderman
Publisher: PEARSON
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Part-1
Pumps-Efficiency Calculations (3):
The power of the prime mover running a pump is 20 HP, and the power out of the pump is 19 HP, what is the overall efficiency of
the motor in percentage %6.
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Part-2
Pumps-Efficiency Calculations (2)
The theoretical torque leaving a pump is 375.56 in.lb. the torque of the prime mover is 458 in.lb. What is the mechanical efficiency
of the motor in percentage 96.
b) Write down any two classifications of unplanned maintenance.
A building owner has several leaking hot water faucets that waste a combined total of 50 gallons per day. The supply hot water temperature in the building is 130 °F and the mains water temperature is 50 °F. If the hot water is provided by a natural gas boiler with an efficiency of 85%, how much energy could be saved if the owner repairs the leaking faucets?
a. 23,292 kBtu/year
b. 12,184 kBtu/year
c. 1,717 kBu /year
d. 14,326 kBtu/year
Chapter 4 Solutions
AUTOMOTIVE TECHNOLOGY-NATEF TASK SHEETS
Ch. 4 - What factors are part of being a professional...Ch. 4 - Prob. 2RQCh. 4 - A formal evaluation could include what items?Ch. 4 - What are the three Cs?Ch. 4 - What should be included on the work order after...Ch. 4 - Professionalism includes which factor? a. Keeping...Ch. 4 - Types of communications include _____. a. verbal...Ch. 4 - The three Cs include _____, _____, and _____. a....Ch. 4 - Technician A says that customer-pay rate is...Ch. 4 - Housekeeping duties of a technician can include...
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