Air diffuser - Study guides, Class notes & Summaries
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS 2024-2025 WITH COMPLETE SOLUTION
- Exam (elaborations) • 19 pages • 2024
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION 
 
What is Bernoulli's theorem Answer - Any incompressible fluid that passes through a convergent opening, velocity increase, pressure decreases 
 
What is Bernoulli's Equation Answer - Pt=Ps+Pk 
 
Which type of air is compressible? Answer - Supersonic air 
 
What happens to Velocity and Pressure in a nozzle Answer - Pressure decreases, velocity increases 
 
What happens to Velocity and Pressure in a diffuser? Answer - Pre...
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HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
- Exam (elaborations) • 35 pages • 2024
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HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A 
 
Q: What is the absolute pressure at sea level if a gauge pressure is 35 psig? 
 
 
Answer: 
 49.7psia 
 
 
 
Q: 100,000 BTUH output furnace. 
Return air temp is 65F. 
Supply air is 135F. 
What is the CFM? 
 
 
Answer: 
 1323CFM 
 
 
 
Q: What is the best method of repair when a residential supply diffuser is noisy because of a loose vane? 
 
 
Answer: 
 Replace the diffuser. 
 
 
 
Q: When...
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NIFE ENGINES QUESTIONS AND ANSWERS GRADED A+
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NIFE ENGINES QUESTIONS AND 
 
ANSWERS GRADED A+ 
 
What is Bernoulli's theorem 
Any incompressible fluid that passes through a convergent opening, velocity increase, pressure 
decreases 
What is Bernoulli's Equation 
Pt=Ps+Pk 
Which type of air is compressible? 
Supersonic air 
What happens to Velocity and Pressure in a nozzle 
Pressure decreases, velocity increases 
What happens to Velocity and Pressure in a diffuser? 
Pressure increases, velocity decreases 
Draw the tootsie roll method 
Left...
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TPC 305 PUMPS 2023/24 UPDATE
- Exam (elaborations) • 5 pages • 2023
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The archmedian screw is pumps material by? 
A bolt threaded screw in an enclosed cylinder or open trough 
 
 
 
If material being pumped needs to remain at a certain temperature ________ pipes are used 
Insulated 
 
 
 
Centrifugal pumps are good for pumping waste because of 
Low head pumping requirements and the ability to pass small particles 
 
 
 
Which is the most well suited pump for pumping high viscosity material? 
Positive displacement pumps 
 
 
 
Greases, heavy mastics, cement, and si...
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NIFE Engines 2024 Questions and Answers Rated A+
- Exam (elaborations) • 35 pages • 2024
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NIFE Engines 2024 Questions and 
 
Answers Rated A+ 
 
EXPLAIN Bernoulli's Equation, given dynamic pressure, static pressure, and total pressure 
Bernoulli's equation stats Pt=Pdynamic+Pstatic. 
 
As any incompressible fluid passes through a convergent opening its velocity increases and 
pressure decreases. 
Describe Airflow in a nozzle 
When Pressure is decreased and velocity is increased 
 
Subsonic: 
Diverging nozzle=increased pressure, decreased velocity 
 
converging: opposite 
 
Super so...
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION
- Exam (elaborations) • 11 pages • 2024
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION 
 
 
What is Bernoulli's theorem 
Any incompressible fluid that passes through a convergent opening, velocity increase, pressure decreases 
What is Bernoulli's Equation 
Pt=Ps+Pk 
Which type of air is compressible? 
Supersonic air 
What happens to Velocity and Pressure in a nozzle 
Pressure decreases, velocity increases 
What happens to Velocity and Pressure in a diffuser? 
Pressure increases, velocity decreases 
Draw the t...
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION
- Exam (elaborations) • 11 pages • 2024
-
- $14.49
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NIFE ENGINES ALL POSSIBLE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION 
 
 
What is Bernoulli's theorem 
Any incompressible fluid that passes through a convergent opening, velocity increase, pressure decreases 
What is Bernoulli's Equation 
Pt=Ps+Pk 
Which type of air is compressible? 
Supersonic air 
What happens to Velocity and Pressure in a nozzle 
Pressure decreases, velocity increases 
What happens to Velocity and Pressure in a diffuser? 
Pressure increases, velocity decreases 
Draw the t...
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PDD Exam Sec 1 Questions & Answers 2024/2025
- Exam (elaborations) • 35 pages • 2024
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PDD Exam Sec 1 Questions & Answers 2024/2025 
 
 
Does duct lining quiet a duct? - ANSWERSInternal duct lining quiets fan noise moving through ductwork a LOT (but has air quality concerns from (1) mold growing in the fibrous dark liner and (2) particulates from the fibrous lining fibers blowing loose and swirling around the room and in your lungs) 
External duct lining fails to quiet a duct 
Flexible duct: If the last 3 to 12 feet of a duct run is swapped for flexible duct (which also allows tol...
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HVAC NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (Graded A+)
- Exam (elaborations) • 19 pages • 2024
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HVAC NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (Graded A+) What is the primary purpose of using flux when soldering copper or brass parts? -Ans 
Prevent Oxidation 
The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans 
Drain off and away from the outdoor coil. 
Why must the runoff be drained off and away from the outdoor coil? -AnsExcessive ice can 
build up on the bottom of the coil and can reduce capacity. 
What is the component th...
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NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (VERIFIED A+)
- Exam (elaborations) • 19 pages • 2024
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NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (VERIFIED A+) The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans 
Drain off and away from the outdoor coil. 
Why must the runoff be drained off and away from the outdoor coil? -AnsExcessive ice can 
build up on the bottom of the coil and can reduce capacity. 
What is the component that reduces sound transmission and prevents water leaks of a package 
heat pump installed on a roof? -Ans Cur...
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