Question 61 : In a diesel engine the pressure during combustion may increase to a range at
1. 10-15 atm
2. 15-20 atm
3. 20-30 atm
4. 55-75 atm
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Question 62 : The fuel is injected into the cylinder in diesel engine when the piston is
1. Exactly at TDC after compression stroke
2. Exactly at the BDC before compression stroke
3. Approaching TDC during compression stroke
4. Approaching TDC during exhaust stroke
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Question 63 : Gudgeon pins are made of
1. Cast iron
2. Aluminium
3. Same material as that of piston
4. Hardened and ground steel
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Question 64 : Which of the following item is made of aluminium alloy
1. Piston ring
2. Piston
3. Connecting rod
4. Crankshaft
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Question 65 : A square type engine
1. Has geometrically square shape
2. Has two vertical and two horizontal cylinders
3. Has cylinder bore equal to stroke length
4. None of the mentioned
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Question 66 : Compression rings are fitted at the
1. Middle of skirt
2. Bottom of skirt
3. Top of skirt
4. None of the mentioned
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Question 67 : In case of four cylinder opposed cylinder engines the firing order is
1. 1-4-3-2
2. 1-3-4-2
3. 1-2-3-4
4. 1-2-4-3
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Question 68 : A four cylinder engine is of capacity 2.4 litres. Then swept volume of one cylinder is
1. 400 cubic centimeters
2. 600 cubic centimeters
3. 2400 cubic centimeters
4. 1200 cubic centimeters
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Question 69 : Which one of the following is a type of Gasket
1. Copper asbestos
2. Steel asbestos
3. Single sheet rigid
4. All of the mentioned
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Question 70 : The angle between two cylinders in a two cylinder V-type engine is usually
1. 15 degrees
2. 45 degrees
3. 60 degrees
4. 90 degrees
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