Aero Engine Maintenance And Repair Quiz
Questions and Answers
- 1.
What is the fourth and final stage of a four-stroke engine called?
- A.
Exhaust
- B.
Intake
- C.
Combustion
- D.
Compression
Correct Answer
A. ExhaustExplanation
The fourth and final stage of a four-stroke engine is called the exhaust stage. In this stage, the exhaust valve opens, allowing the burned fuel and air mixture to exit the combustion chamber and be expelled from the engine. This stage completes the cycle of the four-stroke engine, preparing it for the next intake stage where fresh fuel and air can enter the combustion chamber.Rate this question:
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- 2.
BHP stands for
Correct Answer
Brake Horse powerExplanation
BHP stands for Brake Horse Power, which is a unit of measurement used to determine the power output of an engine. It represents the amount of power that an engine produces before any losses due to friction or other factors. Brake Horse Power is commonly used in the automotive industry to compare the power output of different vehicles.Rate this question:
- 3.
Back fire takes place in Intake manifold . State True or False
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Backfire refers to the combustion of fuel or an explosion occurring in the intake manifold or carburetor instead of the combustion chamber. This can happen when there is an imbalance in the air-fuel mixture, causing unburned fuel to ignite in the intake manifold. Therefore, the statement "Backfire takes place in the intake manifold" is true.Rate this question:
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- 4.
What's a piston?
- A.
Metal wire that carrys an electric charge for the spark plug
- B.
Exhaust pipe for Gases
- C.
Cylindrical piece of metal that moves up and down useing the energy supplied by the combustion process
- D.
Tube that supplys water to the engine's cooling system
Correct Answer
C. Cylindrical piece of metal that moves up and down useing the energy supplied by the combustion processExplanation
A piston is a cylindrical piece of metal that moves up and down within the cylinder of an engine. It is driven by the energy produced during the combustion process. As the fuel-air mixture ignites, it creates pressure that pushes the piston downward, converting the chemical energy into mechanical energy. The piston then moves back up, compressing the mixture and expelling the exhaust gases. This repetitive motion of the piston is what drives the engine and generates power.Rate this question:
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- 5.
IHP Stands for
Correct Answer
Indicated Horse powerExplanation
IHP stands for Indicated Horse Power, which is a measurement of the power output of an engine. It represents the power produced by the engine's pistons during the combustion process. This measurement is important in determining the overall performance and efficiency of an engine.Rate this question:
- 6.
What motion does the crankshaft make?
- A.
Side to Side
- B.
Circular
- C.
Back and Forth
- D.
Up and Down
Correct Answer
B. CircularExplanation
The crankshaft makes a circular motion. This is because the crankshaft is a mechanical component that converts the reciprocating motion of the pistons into rotational motion. It does this by using the connecting rods and a crank mechanism to convert the up and down motion of the pistons into a circular motion. This circular motion is then transferred to the drivetrain of the vehicle, allowing the wheels to turn and the vehicle to move forward.Rate this question:
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- 7.
What are the purpose of piston rings?
- A.
Keeps a tight seal on the cylinders
- B.
Small pieces of metal that connects the parts of the crankshaft together
- C.
Keeps the oil from drying out
- D.
Keeps a tight seal on the piston heads so fuel and air doesn't leak into the sump
Correct Answer
D. Keeps a tight seal on the piston heads so fuel and air doesn't leak into the sumpExplanation
Piston rings are responsible for keeping a tight seal on the piston heads so that fuel and air do not leak into the sump. This is important for the efficient combustion process in the engine, as any leakage would result in loss of power and potentially damage the engine. By maintaining a tight seal, the piston rings ensure that the fuel and air mixture is properly contained within the combustion chamber, allowing for optimal performance and preventing any potential issues.Rate this question:
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- 8.
Piston Engines are otherwise called as
Correct Answer
Reciprocating EnginesExplanation
Piston engines are commonly referred to as reciprocating engines because they operate by converting the reciprocating motion of pistons into rotational motion. The pistons move up and down within cylinders, drawing in air or fuel mixture and compressing it before igniting it to produce power. This back-and-forth motion of the pistons is what gives these engines their name.Rate this question:
- 9.
MAP stands for
Correct Answer
Manifold Absolute PressureExplanation
MAP stands for Manifold Absolute Pressure. The Manifold Absolute Pressure sensor measures the pressure inside the intake manifold of an engine. This information is used by the engine control unit to calculate the amount of fuel to inject into the engine and to adjust ignition timing. The MAP sensor is an important component in the engine management system as it helps optimize engine performance and fuel efficiency.Rate this question:
- 10.
How many Troubleshooting Procedures are there ?
- A.
5
- B.
6
- C.
7
- D.
8
Correct Answer
B. 6Explanation
There are a total of six troubleshooting procedures.Rate this question:
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- 11.
Which of the following is not a basic type of a combustion chamber ?
- A.
Basket Chamber
- B.
Can
- C.
Annular
Correct Answer
A. Basket ChamberExplanation
The correct answer is "basket Chamber." A basket chamber is not a basic type of a combustion chamber. The basic types of combustion chambers include can and annular chambers.Rate this question:
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- 12.
What is the main purpose of Supercharging ?
Correct Answer
To increase MAPExplanation
The main purpose of supercharging is to increase MAP (Mean Arterial Pressure). Supercharging refers to the process of compressing the air entering the engine, which leads to an increase in the amount of air and fuel mixture that can be combusted. This results in a higher pressure in the combustion chamber, leading to increased power output from the engine. By increasing MAP, supercharging improves engine performance, providing more power and torque, especially at high speeds or under heavy load conditions.Rate this question:
- 13.
What are the types of Ignition system ?
Correct Answer
Battery Ignition System,Magneto Ignition SystemExplanation
The types of ignition systems are battery ignition system and magneto ignition system. A battery ignition system uses a battery to provide electrical energy to the spark plugs, while a magneto ignition system generates its own electrical energy through the rotation of a magnet. Both systems are used to ignite the fuel-air mixture in an internal combustion engine.Rate this question:
- 14.
The process of breaking up of a liquid into fine droplets by spraying is called
- A.
Carburetion
- B.
Vapourisation
- C.
Atomisation
- D.
Injection
Correct Answer
C. AtomisationExplanation
Atomisation is the process of breaking up a liquid into fine droplets by spraying. This is achieved by converting the liquid into a mist or spray, which consists of tiny droplets. This process is commonly used in various applications such as fuel injection systems, spray painting, and aerosol production.Rate this question:
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- 15.
Engine pistons are usually made of aluminium Alloys because it is
- A.
Stronger
- B.
Wear less
- C.
Absorbs Shocks
- D.
Lighter
Correct Answer
D. LighterExplanation
Engine pistons are usually made of aluminum alloys because they are lighter. This is important because lighter pistons reduce the overall weight of the engine, resulting in improved fuel efficiency and performance. Additionally, lighter pistons allow for faster acceleration and smoother engine operation.Rate this question:
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