ESAS 4-2
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A pump has an efficiency of 65%. It is driven by a 0.75 horsepower motor. The pump produces a pressure rise of 120 Pa in water. What is the required flow rate?
3.03 m³/s
4.04 m³/s
4.55 m³/s
4.66 m³/s
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the tensile load if a 1/2" × 4" × 12' steel tie rod experiences an 80°F temperature decrease from the no-stress temperature?
92,346 lb
47,120 lb
31,200 lb
52,130 lb
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The rate of return for a P10,000 investment that will yield P1,000 per year for 20 years is closest to
2%
4%
8%
16%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The overall energy program formulated and updated yearly by the DOE and submitted to Congress pursuant to R.A. 7638.
Power Development Plan (PDP)
Philippine Energy Plan (PEP)
Philippine Electrical Code (PEC)
Preliminary Project Planning Data (PPPD)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The work of a polytropic (n = 1.21) compression of air (cₚ/cᵥ = 1.4) in a system with moving boundary from P₁ = 15 psia, V₁ = 1.0 cu. ft. to P₂ = 150 psia, V₂ = 0.15 cu. ft. is
1080 ft-lb
5150 ft-lb
6882 ft-lb
2700 ft-lb
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
One Newton is equivalent to
10⁵ dyne
10⁸ dyne
10⁷ dyne
10⁶ dyne
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An adiabatic process with no work done is
isometric
throttling
isobaric
polytropic
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