Three types of fan blades used with centrifugal fans include
A) Concentric, isentropic, and exothermal
B) Straight, right angle, and airfoil
C) Forward curved, backward curved, and backward curved airfoil
D) Straight, forward curved , and right angle
C
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What will be an ideal response?
Two technicians are discussing leaf springs. Technician A says that leaf springs offer a more comfortable ride than standard coil springs. Technician B says that monoleaf springs are typically found on standard passenger cars. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
The heat addition is nearest:
An engine operates on a diesel cycle with a compression ratio of 20 between temperature limits of 25°C and 1400°C and an inlet pressure of 100 kPa. The power output is 500 kW.
A) 433 kJ/kg
B) 487 kJ/kg
C) 506 kJ/kg
D) 522 kJ/kg
The 2009 IECC requires a minimum of ____ in each house.
A. one clock setback thermostat B. two clock setback thermostats C. one standard thermostat D. two standard thermostats