1. ___________ engines make limited power due to air intake:
(A) Turbo charger
(B) Super charger
(C) Naturally aspirated
(D) None of these
2. Naturally aspirated engines tend to only make a peak volumetric efficiency of:
(A) 40 % to 50 %
(B) 50 % to 60 %
(C) 75% to 85%
(D) None of these
3. The turbocharger uses the ________ from the engine to spin a turbine:
(A) Exhaust flow
(B) Coolant flow
(C) Oil flow
(D) None of these
4. The turbine in the turbocharger spins at speeds of up to _____ rotations per minute (rpm):
(A) 10,000
(B) 15,000
(C) 150,000
(D) None of these
5. Superchargers are basically compressors/blowers:
(A) Rotor
(B) Motor
(C) Blower
(D) None of these
6. The burnt gases are forced or pushed to atmosphere from the engine cylinder is called:
(A) Scavenging
(B) Hissing
(C) Pumping
(D) None of these
7. There is a direct relationship between pressure and velocity:
(A) Vacuum
(B) Velocity
(C) Temperature
(D) None of these
8. The greater the air velocity, the lower the air pressure at the _______:
(A) Intake manifold
(B) Venturi
(C) Air cleaner
(D) None of these
9. The pressure that opposes the motion of a piston on its exhaust stroke is called:
(A) Combustion pressure
(B) Exhaust gas back pressure
(C) Boost pressure
(D) None of these
10. The plenum is the large cavity at the top of the:
(A) Carburetor
(B) Combustion chamber
(C) Manifold
(D) None of these
11. The atmospheric pressure and air density can affect the engine:
(A) Power
(B) Performance
(C) Combustion process
(D) All of these
12. Engine requires a specific amount of _____ to run properly:
(A) Air
(B) Coolant
(C) Power
(D) None of these