Question 11 : In modern engines cylinder block and crank case forms a single casting because _________
1. reduces space consumption
2. rigid structure
3. wearing properties
4. can withstand high temperature
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Question 12 : Which of the following is advantage for aluminium alloy cylinder block over grey cast iron?
1. density
2. machinability
3. co-efficient of thermal expansion
4. thermal conductivity
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Question 13 : Which of the following isn't a cylinder block part?
1. cylinder in which piston slides up and down
2. openings for valves
3. passages for flow of cooling water
4. carburettor
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Question 14 : Why cylinder head cast as a separate piece?
1. good compression ratio
2. high efficiency
3. prevent collision
4. easy removal
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Question 15 : For retaining compression in the cylinder, a flat piece of ___________ is placed between the cylinder head and cylinder block.
1. gasket
2. rims
3. cylinder liner
4. invar strut
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Question 16 : Cylinder block is usually made from _________
1. grey cast iron
2. steel sleeves
3. nickel
4. chromium
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Question 17 : Spark plug are mounted inside ________
1. cylinder block
2. cylinder head
3. crank case
4. piston
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Question 18 : The cylinder block and upper half of the crank case are cast by _________ material.
1. aluminium
2. zinc
3. semi-steel
4. titanium
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Question 19 : Bubbles of air in radiator is sign of _________ problem.
1. cracked block
2. blown head gasket
3. seized block
4. lack of engine oil
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Question 20 : ____________ is combination of fibre and cork granules that is more compressible and resilient.
1. karropak
2. felicoid
3. shimbestos
4. metal sandwich
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