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Test: Supercharging of IC Engine

10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Supercharging of IC Engine

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This mock test of Test: Supercharging of IC Engine for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 10 Multiple Choice Questions for Mechanical Engineering Test: Supercharging of IC Engine (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Supercharging of IC Engine quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Supercharging of IC Engine exercise for a better result in the exam. You can find other Test: Supercharging of IC Engine extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

Solution:
QUESTION: 2

What is the net work output of the following supercharged engine cycle?

Solution:

Wsc - Engine work output + Gas
exchange - supercharger work
= WN + W- WS

QUESTION: 3

Supercharging increases the power output of the engine by

Solution:

The method of supplying air or air-fuel mixture higher than the pressure at which the engine naturally aspirates, by means of a boosting device is called supercharger.

QUESTION: 4

What is not true in the context of supercharging of IC engines?

Solution:

Supercharging increases the power output of the engine. It does not increase the fuel consumption, per brake kW hour.

QUESTION: 5

The SI engines are not supercharged due to

Solution:

The degree of supercharging in SI engines is limited by the knock. The increase in P and T reduces ignition delay and consequently increases the knocking tendency.

QUESTION: 6

The power output of a supercharged engine is higher than its naturally aspirated counterpart due to the following reasons:
1. The amount of inducted air is increased.
2. Slight improvement in mechanical efficiency.
3. Recovery of supercharger work by positive gas exchange work.
4. Better scavenging and reduced exhaust gas temperature.

Which of these reasons are valid?

Solution:
QUESTION: 7

Consider the following statements:
1. Supercharging increases the power output and volumetric efficiency of an engine.
2. Supercharging is more suitable for SI engines that Cl engines.
3. The limit of supercharging for an SI engine is set by detonation, and that for a Cl engine is set by thermal loading.
Which of the statement given above are correct?

Solution:
QUESTION: 8

Consider the following statements:
1. Volumetric efficiency of supercharged engine is between 100-110%.
2. Supercharging is normally done in racing cars.
3. Supercharging is of vital importance where weight and space are important.

Which of these statements are correct ?

Solution:

• In practice, racing car engines use supercharging.
• Supercharging is important in marine and automotive engine where weight and space are important.

QUESTION: 9

The type of supercharger commonly used in automotive engines is

Solution:
QUESTION: 10

The centrifugal type supercharger is preferable for

Solution:

The required characteristics of centrifugal type supercharger is poor and suitable only for low speeds. Air + fuel mixture come out at high pressure.