2. The device that varies incoming line pressure using centrif-
ugal force is known as:
a. vacuum modulator.
b. reverse boost valve.
c. governor.
d. throttle valve.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Aplate of dimensions 3 m x 3 m is placed 0.37 mm apart from a fixed plate. the plate requires a force of 2n to move at speed of 45 cm/s. evaluate the viscosity of the fluid in between the plates

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)