The smaller the valve, the ____ the pressure drop develops across its restrictor.
A. smaller
B. greater
Answer: B
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PROBLEM 3.143 A hollow member having the cross section shown is formed from sheet metal of 2-mm thickness. Knowing that the shearing stress must not exceed 3 MPa, determine the largest torque that can be applied to the member.
How does changing tire diameter affect the speedometer reading?
A) A larger diameter tire causes the speedometer to read slower than the actual speed and more than the actual mileage on the odometer B) A larger diameter tire causes the speedometer to read faster than actual speed and more than actual mileage on the odometer C) A smaller diameter tire causes the speedometer to read faster than the actual speed and more than the actual mileage on the odometer D) A smaller diameter tire causes the speedometer to read slower than the actual speed and less than the actual mileage on the odometer
What is the purpose of a duct stretcher?
A) To pull rectangular duct together when using drive cleats B) To increase the length of a sheet metal duct when it is within ΒΌ in C) There is no such thing as a duct stretcher. D) To pull flexible duct straight
The largest capacity chillers use
A) Centrifugal compressors B) Rotary compressors C) Reciprocating compressors D) Scroll compressors