Out of 40,000 Btu supplied, only 1,000 Btu are actually used in doing work. What is the thermal efficiency?
A. 2.5%
B. 4.5%
C. 6.5%
D. 7.5%
Answer: A
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____________________ numbers are letters that represent arithmetic numbers.
Fill in the blank(s) with the appropriate word(s).
Para limitar la impedancia, los transformadores de aislamiento deben ser de _____ o menos.
a. 5 kVA b. 10 kVA c. 12 kVA d. 20 kVA
Technician A says that the engine drives the U-joint at a constant speed, but the output speed of the U-joint changes based on the angle. Technician B says that smaller U-joint angles create greater changes in speed. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Measuring the total air duct leakage is accomplished with a(n) ____________________ test.
Fill in the blank(s) with the appropriate word(s).