English Standard for Class 11 Mechanics Exam

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Torque is expressed in units of _________. A) Pound- feet per second C) Foot- pounds per minute 1) B) Pound- feet D) Pounds per minute 2) One cylinder of an automotive four- stroke cycle engine completes a cycle every ________. A) 720° B) 90° C) 180° D) 360° 2) 3) The following statements are all correct EXCEPT _________. A) Torque always results in movement. B) Torque is the measurement of rotational force. C) Torque is often expressed in pound- feet. D) All of the above answers are correct. 3) 4) An 8 cylinder engine with a bore of 4.000 inches and a stroke of 3.000 inches has a displacement of _____. A) 226 cubic inches B) 350 cubic inches C) 383 cubic inches D) 302 cubic inches 4) 5) Which part of the four stroke cycle is illustrated in this drawing? 5) A) Power B) Compression C) Intake D) Exhaust 6) An engine with a displacement of 302 cubic inches converts to ________ liters (rounded off). A) 4.9 B) 3.7 C) 49 D) 5.7 6) 7) The ________ converts linear motion of the pistons into rotary motion. A) Camshaft B) Crankshaft C) Connecting rod 7) 1 D) None of these 8) A rotating force is called _________. A) Combustion pressure C) Eccentric movement 8) B) Horsepower D) Torque 9) What part of the engine is considered to be the foundation of the engine? A) Block B) Crankshaft C) Cylinder head(s) D) Pistons 9) 10) An engine's cylinders have all been bored 0.030" oversize. This will cause the engine's _______ to increase. A) Length. B) Weight C) Displacement D) Stroke 10) 11) The chemical energy in fuel is converted to heat by the burning of the fuel at a controlled rate. This process is called _______. A) Consumption B) Power C) Torque D) Combustion 11) 12) How many rotations of the crankshaft are required to complete each stroke of a four- stroke cycle engine? A) Two B) One- fourth C) One D) One- half 12) 13) Which of these is the metric unit for torque? A) Pound- foot C) Foot- pound 13) B) Kilogram- meter D) Newton- meter 14) Which component listed below does NOT form part of the combustion chamber? A) Valve B) Piston C) Connecting rod D) Cylinder head 14) 15) The ratio of the volume of a cylinder with the piston at BDC to the volume of the cylinder with the piston at TDC is known as ________. A) Displacement B) Volume ratio C) Compression ratio D) None of these 15) 16) A 5.7 liter engine is about what size in cubic inches? A) 400 B) 350 16) 2 C) 305 D) 426 17) In this drawing, which item is the camshaft? A) B 17) B) A C) C D) None of these 18) How many degrees of CRANKSHAFT rotation are needed to complete the four stroke combustion cycle? A) 180 B) 720 C) 90 D) 360 18) 19) How many degrees of CRANKSHAFT rotation are required for a piston to travel from TDC to BDC and return to TDC? A) 180 B) 90 C) 720 D) 360 19) 20) Technician A says that the crankshaft determines the stroke of an engine. Technician B says that the length of the connecting rod determines the stroke of an engine. Which technician is correct? A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B 20) 21) Horsepower is _________. A) A measurement of engine power B) Calculated as torque multiplied by engine speed (RPM) and then divided by 5,252 C) Also called cubic inch displacement D) Both A and B 21) 22) The coolant flow through the radiator is controlled by the _________. A) Cooling Fan(s) B) Size of the passages in the block C) Water pump D) Thermostat 22) 23) What force turns the turbine shaft in a turbocharger? A) A belt B) Exhaust gases C) Engine vacuum D) An electric motor 23) 24) An SOHC V8 engine has how many camshafts? A) Four B) Three 24) C) Two 25) Which component is NOT needed in a typical overhead cam engine? A) Rocker arm B) Push rod C) Camshaft 3 D) One 25) D) Valve spring 26) All overhead valve engines _________. A) Use an overhead camshaft B) Operate by the Wankel cycle C) Have the valves located in the cylinder head D) Use the camshaft to close the valves 26) 27) How many degrees of CAMSHAFT rotation are needed to complete the four stroke combustion cycle? A) 360 B) 720 C) 180 D) 90 27) 28) The diameter of a cylinder is called the ______. A) Diameter B) Radius 28) C) Bore D) Stroke 29) Identify this engine component. 29) A) Flat head valve assembly C) Engine block B) Cylinder head D) Cylinder block 30) How many degrees of CAMSHAFT rotation are needed for a piston to travel from TDC to BDC and return to TDC? A) 360 B) 720 C) 90 D) 180 4 30)