Thursday, September 2, 2010

Mechanical Review: Power Elements Part 4

Here's the 4th installment of mechanical engineering review questions on Power and Industrial plant engineering.

Choose the BEST answer.

1. A term referring to the process of clearing exhaust gases by forcing into it a current of air which provides clean air for the next compression stroke of the engine.
a. Scavenging
b. Turbo charging
c. Doping
d. Ventilation

2. The process regulating air supply either by mechanical or natural means.
a. Air conditioning
b. Turbo charging
c. Ventilation
d. Scavenging

3. A large pipe or drum into which a group of boiler is connected.
a. leader
b. header
c. kiln
d. liquid receiver

4. An ideal gas undergoes an isothermal compression, the enthalpy therefore,
a. Increases
b. Decreases
c. Increases then decreases
d. Remain the same

5. The speed of the turbine in a medium head hydroelectric power plant is regulated by…
a. Nozzle
b. Forebay
c. Deflector gate
d. Wicket gate

6. Which of the following is NOT a unit measure of viscosity
a. SSU
b. Centipoises
c. Redwood
d. Degree Baume

7. Energy from the random motion of molecules within the body
a. Kinetic energy
b. Temperature
c. Heat
d. Chemical energy

8. Term referring to the ignition of air fuel mixture in the intake of the exhaust manifold
a. Backfire
b. Fire point
c. Flash point
d. Detonation

9. The amount of matter containing the Avogadro’s number of particles (molecule or atoms).
a. gram
b. Mole
c. Molecular mass
d. Atomic mass

10. Internal combustion engine works on the following engines EXCEPT
a. Diesel
b. Otto
c. Dual combustion
d. Rankine

Answers will be posted here after 3 days.

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