Engineering Quiz review

The Intake Stroke is

• Cycle begins with the piston at Top Dead Center (TDC); as the piston (and crankshaft) moved downward towards Bottom Dead Center (BDC), a partial vacuum is created in the cylinder. During which, the intake valve opens and the vacuum sucks in the mixture. The Exhaust Valve is closed.

• On the second upward stroke, the piston is moving from Bottom Dead Center (BDC) to Top Dead Center (TDC), the exhaust valve is opened and the burned gasses are forced out by the piston. The intake valve is closed. At the moment the piston completes the exhaust stroke, the cycle starts again with the intake stroke.

• Just before the piston reaches Top Dead Center (TDC) the compressed mixture is ignited by the spark plug. The very hot gasses expand with tremendous force, driving the piston down and turning the crankshaft. Both the intake and exhaust valves are closed.

• The piston moves upward from Bottom Dead Center (BDC) to Top Dead Center (TDC). The fuel and air mixture is compressed. Both the Intake and Exhaust Valve are closed. This stroke increases the power created by the engine in the next stroke. 

The Compression Stroke is

• Just before the piston reaches Top Dead Center (TDC) the compressed mixture is ignited by the spark plug. The very hot gasses expand with tremendous force, driving the piston down and turning the crankshaft. Both the intake and exhaust valves are closed.

• Cycle begins with the piston at Top Dead Center (TDC); as the piston (and crankshaft) moved downward towards Bottom Dead Center (BDC), a partial vacuum is created in the cylinder. During which, the intake valve opens and the vacuum sucks in the mixture. The Exhaust Valve is closed.

• On the second upward stroke, the piston is moving from Bottom Dead Center (BDC) to Top Dead Center (TDC), the exhaust valve is opened and the burned gasses are forced out by the piston. The intake valve is closed. At the moment the piston completes the exhaust stroke, the cycle starts again with the intake stroke.

• The piston moves upward from Bottom Dead Center (BDC) to Top Dead Center (TDC). The fuel and air mixture is compressed. Both the Intake and Exhaust Valve are closed. This stroke increases the power created by the engine in the next stroke. 

The Ignition(power) Stroke is

• On the second upward stroke, the piston is moving from Bottom Dead Center (BDC) to Top Dead Center (TDC), the exhaust valve is opened and the burned gasses are forced out by the piston. The intake valve is closed. At the moment the piston completes the exhaust stroke, the cycle starts again with the intake stroke.

• Just before the piston reaches Top Dead Center (TDC) the compressed mixture is ignited by the spark plug. The very hot gasses expand with tremendous force, driving the piston down and turning the crankshaft. Both the intake and exhaust valves are closed.

• Cycle begins with the piston at Top Dead Center (TDC); as the piston (and crankshaft) moved downward towards Bottom Dead Center (BDC), a partial vacuum is created in the cylinder. During which, the intake valve opens and the vacuum sucks in the mixture. The Exhaust Valve is closed.

• The piston moves upward from Bottom Dead Center (BDC) to Top Dead Center (TDC). The fuel and air mixture is compressed. Both the Intake and Exhaust Valve are closed. This stroke increases the power created by the engine in the next stroke. 

The Exhaust Stroke is

• On the second upward stroke, the piston is moving from Bottom Dead Center (BDC) to Top Dead Center (TDC), the exhaust valve is opened and the burned gasses are forced out by the piston. The intake valve is closed. At the moment the piston completes the exhaust stroke, the cycle starts again with the intake stroke.

• Just before the piston reaches Top Dead Center (TDC) the compressed mixture is ignited by the spark plug. The very hot gasses expand with tremendous force, driving the piston down and turning the crankshaft. Both the intake and exhaust valves are closed.

• The piston moves upward from Bottom Dead Center (BDC) to Top Dead Center (TDC). The fuel and air mixture is compressed. Both the Intake and Exhaust Valve are closed. This stroke increases the power created by the engine in the next stroke.

• Cycle begins with the piston at Top Dead Center (TDC); as the piston (and crankshaft) moved downward towards Bottom Dead Center (BDC), a partial vacuum is created in the cylinder. During which, the intake valve opens and the vacuum sucks in the mixture. The Exhaust Valve is closed.

What are the parts of the intake unit?

• fuel, air, intake manifold air duct/tube, carburetor, fuel lines

• fuel, air, piston, crankshaft, carburetor, fuel gauge, fuel pump

• fuel tank, fuel pump, fuel filter, fuel lines, fuel gauge, air duct/tube, carburetor/injector

• fuel tank, fuel lines, air duct/tube, intake distributer, piston, air, fuel

The parts of the exhaust system are

• catalytic convertor, exhaust manifold, tail pump, exhaust piston

• muffler, exhaust pipe, tail pump, crankshaft

• exhaust manifold, tail pump, muffler, exhaust piston

• exhaust manifold, catalytic convertor, muffler(s), exhaust pipe, oxygen sensor(s)

The parts of the Ignition System are

• High Tension (Voltage) cable (HTC or HVC), Battery, manifold, exhaut pipe

• Battery, Spark Plug, Distributer, Ignition coil, High Tension (Voltage) cables (HTC or HVC)

• Battery, High Tension (Voltage) cables, manifold, carburetor

• Distributer, Piston, Ignition Coil, Spark Plug

The equation for kinetic energy is

• KE = h x d x v

• KE = 1/2m x (v)2

• KE = m x g x h

• KE = m x v

The equation for Potential Energy (PE) is

• PE = 1/3m x g x (h)3

• PE = m x v

• PE = 1/2m x (v)2

• PE = m x g x h

The equations for work is (check all that apply)

• w = p x t

• w = d x v

• w = f x d

• w = p/t