Air enters a nozzle at 100 m/s, 20°C and 100 kPa. The maximum exiting velocity if it exits at 80 kPa is nearest:
A) 200 m/s
B) 215 m/s
C) 250 m/s
D) 300 m/s
B) 215 m/s
For maximum velocity assume s = const so
You might also like to view...
Answer the following statement(s) true (T) or false (F)
1.The NEC® permits overcurrent protection devices to be located in bathrooms. 2.In residential wiring, all 120-volt, 15- and 20-ampere branch circuits supplying outlets or devices in kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, or similar rooms must be AFCI protected. 3.A 12 AWG branch circuit can be protected by a 15-ampere fuse or circuit breaker. 4.A single-pole circuit breaker has one stab contact and a two-pole circuit breaker has two stab contacts. 5.A two-pole circuit breaker is used to protect a 120-volt branch circuit.
If the centrifugal pump feeding cooled water to a series of water-cooled condensers breaks down, the head pressure of the vapor compression systems will decrease.
Answer the following statement true (T) or false (F)
Harnesses are classified into three categories. Which of the following classes is not acceptable as a life safety harness?
A. Class III B. Class III H C. Class I D. Class II
What does a diaphragm do?
What will be an ideal response?