16. valve timing in most engines is such that (a) the intake valve opens before the
piston reaches top dead center-tdc-and closes after the piston reaches bottom
dead center-bdc (b) the exhaust valve opens before the piston reaches bdc and
closes after the piston reaches tdc (c) both valves are partially open at the same
time. (d) all of these.
17. which of the following is placed between the engine block and the cylinder head? (a) timing gear cover (b) an oil seal (c) a gasket (d) an oil pan.
18. a one cylinder engine with one valve in the head and one valve in the block is an
(a) l-head engine (b) t-head engine (c) f-head engine (d) i-head engine.
19. a supercharger is typically used with a (a) miller-cycle engine
(b) variable compression engine (c) two-stroke cycle diesel engine (d) all of these.
20. regenerative braking is most commonly found on (a) hybrid vehicles
(b) two stroke diesel engine vehicles (c) rotary engine vehicles
(d) natural gas vehicles.