68 Auto Fundamentals
15. No engine modifications are needed to
run a diesel engine on _____ instead of
petroleum based diesel fuel.
16. Name two advantages of natural gas as a
vehicle fuel.
17. Technician A says that engine mounts
are used to reduce noise in the engine
compartment. Technician B says that
engine mounts can be made of solid rubber
or fl uid fi lled. Who is right?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B.
18. Which valve does a supercharged two-
cycle diesel engine use?
(A) Intake.
(B) Exhaust.
(C) Reed.
(D) None.
19. Technician A says that rotary engines
have fewer moving parts than piston
engines. Technician B says that piston
engines operate more smoothly than rotary
engines. Who is right?
(A) A only.
(B) B only.
(C) A and B.
(D) Neither A nor B.
20. _____-cycle engines are essentially
Atkinson-cycle engines equipped with a
supercharger.
(A) Rotary
(B) Miller
(C) Diesel
(D) I-head
21. In a mild hybrid, _____.
(A) the motor-generator assists in
propelling the vehicle when extra
power is needed
(B) the engine is shut off when the vehicle
is coasting, braking, or stopped
(C) the engine operates the motor-
generator to recharge the battery
(D) All of the above.