1) In addition to recharging the battery, the alternator is required to:  a) supply current to the electrical circuits. b) provide a means of adjusting belt tension. c) provide an additional fuel source for more power. d) absorb belt vibrations. 2) Injectors for diesel engines spray fuel into the: a) intake manifold. b) air cleaner. c) combustion chamber. d) exhaust manifold. 3) When the engine is not running, current to operate electrical circuits is supplied by the: a) alternator. b) starter. c) light switch. d) battery. 4) In EFI fuel systems, the injectors are operated by the: a) fuel pump. b) electronic control unit. c) engine sensors. d) throttle valve. 5) Engines referred to as flat engines usually have: a) 1 crankshaft and 1 bank of cylinders. b) 1 crankshaft and 2 banks of cylinders. c) 2 pistons per cylinder, and 1 crankshaft. d) 2 crankshafts and 2 banks of cylinders. 6) During cranking, the starter motor pinion gear meshes with the: a) ring gear. b) cluster gear. c) idler gear. d) timing gear. 7) Main bearings:  a) support the camshaft in the cylinder block. b) join the connecting rod to the crankshaft. c) support the crankshaft in the cylinder block. d) join the connecting rod to the piston. 8) Horizontally-opposed engines have: a) 1 crankshaft and 1 bank of cylinders. b) 1 crankshaft and 2 banks of cylinders. c) 2 crankshafts and 2 pistons per cylinder. d) 2 crankshafts and 2 banks of cylinders 9) The intake manifold on a carbureted engine carries: a) fuel only. b) air only. c) air and fuel. d) fuel and water 10) What assists in controlling lateral movement of the crankshaft? a) Main bearing shells. b) Big end bearings. c) Crankshaft lateral bearings. d) Crankshaft thrust bearings 11) The injectors in multi-point fuel injection usually spray fuel directly into the: a) air cleaner. b) throttle body. c) engine cylinder. d) intake port. 12) In multi-point EFI systems, fuel is transferred from the tank to the fuel rail by the: a) fuel filter. b) fuel pump. c) fuel regulator. d) fuel accumulator. 13) Dry cylinder sleeves are used in some engines because they: a) can be made of harder material. b) allow cam-ground pistons to be fitted. c) reduce the effects of expansion. d) improve heat transfer. 14) In most cases, cylinder blocks are made of either iron or: a) aluminum. b) steel. c) copper. d) titanium. 15) What is the main benefit claimed for a wet sleeve? a) It is easier to re-bore than a cast sleeve. b) The wet sleeve doesn't corrode as quickly. c) Heat is transferred directly to the coolant. d) The cooling water cannot enter the sump. 16) What is the main design feature of the hemispherical combustion chamber? a) Only overhead camshafts can be used. b) The valves are side by side and in line. c) Only pushrods and rockers can be used. d) Valves are inclined at about 90° to each other. 17) The main reason for fitting a gasket between two surfaces is to: a) provide for large misalignment of parts. b) allow rapid heat transfer. c) prevent distortion of mating surfaces. d) form a seal between two mating parts. 18) The exhaust valve seat is made wider than the inlet valve seat because: a) the seat pressure is higher. b) more heat must go to the exhaust valve seat. c) the intake valve is cooled by incoming mixture. d) a wider seat allows the use of high-lift cams. 19) Oil is more likely to pass down the inlet valve stem than the exhaust, because: a) the inlet valve runs cooler. b) the inlet valve has more stem clearance. c) the inlet valve is exposed to fuel. d) of low pressure created in the inlet port. 20) It is desirable for a starter motor to produce: a) low turning effort at low speeds. b) high turning effort at low speeds. c) high turning effort at high speeds. d) low turning effort at high speeds. 21) Which parts are separated by valve clearance or valve lash? a) The pushrod and the rocker arm. b) The valve stem and the valve guide. c) The valve stem and the valve train. d) The valve and the valve retainer 22) Many pistons are cam-ground to: a) stop the pistons hitting the valves. b) allow for cylinder ovality. c) allow controlled expansion. d) prevent expansion. 23) What is the purpose of the long horizontal slots in the vicinity of the oil control ring found on many pistons? a) To allow oil into the combustion chamber. b) To act as a heat barrier. c) To improve lubrication to the small end. d) To improve the cooling of the piston crown. 24) Holes may be drilled in the crankshaft between the main bearing journals and the crankpins to: a) eliminate stress. b) assist crankshaft cooling. c) reduce torsional vibration. d) carry oil to the big end bearings. 25) The main purpose of the harmonic balancer on the crankshaft is to: a) To reduce the effects of crankshaft torsional vibration. b) To balance crankshaft harmonics. c) To drive the alternator and fan. d) To balance the reciprocating masses. 26) How is the soft bearing surface of engine slipper bearings protected from damage by the hardened crankshaft? a) The bearing work-hardens. b) Anti-wear additives protect the bearings. c) The crankshaft runs on a thin wedge of oil. d) Small particles prevent metal to metal contact. 27) In a carbureted fuel system, air and fuel are mixed in the correct proportion in the: a) fuel filter. b) fuel pump. c) carburetor. d) manifold. 28) Why does a vehicle with automatic transmission use a light drive plate instead of a flywheel? a) Automatics absorb engine vibration. b) The torque converter adds extra weight needed. c) Automatic transmission engines idle faster. d) Automatics are not as powerful. 29) The purpose of the timing chain guides are: a) to make sure the chain has the correct tension. b) to make sure the chain has an appropriate amount of lubrication directed to it. c) to reduce noise and vibrations. d) to reduce chain wear. 30) In relation to a gasoline or petrol engine, the acronym 'SOHC' represents: a) single overhead crankshaft. b) single overhead camshaft. c) short overhead crankshaft. d) supported overhead camshaft. 31) The camshaft of an overhead valve train is driven by: a) timing sprocket. b) timing gear. c) timing chain or belt. d) timing idler belt or sprocket. 32) The component that operates between the valve and the camshaft in an overhead cam engine is the: a) pushrod. b) valve spring retainer. c) rocker arm. d) valve rotator. 33) The purpose of the crankshaft is to: a) convert reciprocating motion into rotary motion. b) join the connecting rods to the pistons. c) to allow continuous movement of the pistons. d) hold the connecting rods together. 34) The component that joins the piston to the crankshaft is the: a) connecting rod bearing. b) connecting rod. c) gudgeon pin. d) main bearing. 35) The toothed timing belt is normally made from: a) natural rubber. b) the same material composition as that used in radiator cooling fan belt. c) fiberglass or wire reinforced synthetic rubber. d) fiberglass reinforced natural rubber. 36) Inlet and exhaust valves are generally located in the: a) inlet and exhaust manifolds. b) cylinder head or block. c) cylinder block. d) crankcase. 37) The main difference in design between direct and indirect injection in diesel engines is that: a) indirect injection uses a separate chamber. b) direct injection uses a flat piston. c) indirect injection injects into the inlet manifold. d) direct injection needs a glow plug for cold starting. 38) Which component acts as a reservoir of oil for the engine? a) The rocker cover. b) The sump or oil pan. c) The crankcase. d) The cylinder block.

Engine Big Quiz (Recap)

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