Air diffuser - Study guides, Class notes & Summaries

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...

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...

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...

Duplex Air Compressor? - ANSWER Consists of two air compressors and two electric motors on one common receiver. Dynamic Compressor? - ANSWER Adds kinetic energy to accelerate air and convert the velocity energy to pressure energy with a diffuser. Effectively the branch pressure range on most pneumatic controllers is? - ANSWER 3 to 15 lbs. Electric Control Systems? - ANSWER A control system in which the power supply is - Low voltage (24 volts). Line voltage (120 or 220 volts). Rarely use...

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...

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...

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...

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...

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...

HVAC NATE Heat Pump/ 171 Q&A/ Already Graded A+ Terms like: What is the absolute pressure at sea level if a gauge pressure is 35 psig? - Answer: 49.7psia 100,000 BTUH output furnace. Return air temp is 65F. Supply air is 135F. What is the CFM? - Answer: 1323CFM What is the best method of repair when a residential supply diffuser is noisy because of a loose vane? - Answer: Replace the diffuser. When performing preventive maintenance on a heat pump what should the technician check ...