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Test: Basics of IC Engine - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test - Test: Basics of IC Engine - 2

Test: Basics of IC Engine - 2 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Basics of IC Engine - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Basics of IC Engine - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basics of IC Engine - 2 below.
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Test: Basics of IC Engine - 2 - Question 1

Consider the following statements:
1. Mean piston speed is given by 

2. Automobile engines operate at higher end of mean piston speed near to 15 m/s.
3. Large marine diesel operate at lower end of mean piston speed near to 8 m/s.

Which of these are correct?

Detailed Solution for Test: Basics of IC Engine - 2 - Question 1

Mean piston speed 

Test: Basics of IC Engine - 2 - Question 2

All of followings are correct except: Inlet-valve mach index is dependent on

Detailed Solution for Test: Basics of IC Engine - 2 - Question 2

where

u = gas velocity through the inlet valve at smallest flow area
α = inlet sonic velocity
b = bore
Di = inlet valve diameter
Vp = mean piston speed
Ci = inlet valve average flow coefficient

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Test: Basics of IC Engine - 2 - Question 3

The mechanical efficiency of a single-cylinder four-stroke engine is 80%. The frictional power is estimated to be 20 kW. What is the brake power developed by the engine?

Detailed Solution for Test: Basics of IC Engine - 2 - Question 3

Test: Basics of IC Engine - 2 - Question 4

Piston compression rings are made of

Test: Basics of IC Engine - 2 - Question 5

The minimum number of rings in a piston are

Detailed Solution for Test: Basics of IC Engine - 2 - Question 5

The leakage of gases between the walls of piston and cylinder is prevented by means of three to six cast iron rings which may be square or rectangular in cross-section.

Test: Basics of IC Engine - 2 - Question 6

The slotted grooves on oil rings for pistons help to

Test: Basics of IC Engine - 2 - Question 7

 Match the List-I (IC engine parts) with List-il (Materials) following:

Test: Basics of IC Engine - 2 - Question 8

 The top of the piston in two-stroke engine is

Detailed Solution for Test: Basics of IC Engine - 2 - Question 8

It is for scavenging of air.

Test: Basics of IC Engine - 2 - Question 9

Accumulation of carbon deposits on the cylinder head of an IC engine leads to increase in

Test: Basics of IC Engine - 2 - Question 10

The engine of a car has three cylinder with total displacement of 770 cc. The compression ratio is 8.7. What is the clearnace volume of each cylinder?

Detailed Solution for Test: Basics of IC Engine - 2 - Question 10

Clearance volume of each cylinder

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