1. The dry saturated steam at very low pressure, (5 – 10 kg/(cm)²) when throttled to atmosphere will become ?

wet

super-heated

remain dry saturated

dry

Answer: super-heated

Explanation:


2. An ideal regenerative cycle is ?

equal to carnot cycle

less than carnot cycle

more than carnot cycle

could be anything

Answer: equal to carnot cycle

Explanation:


3. locomotive boiler is of the following type ?

multi-tubular

horizontal

internally fired

All options are correct

Answer: All options are correct

Explanation:


4. The working cycle in case of four stroke engine is completed in ____________ number of revolution of crankshaft ?

Half

1

2

4

Answer: 1

Explanation:


5. The temperature (in °C) of interior surface of cylinder wall in normal operation is not allowed to exceed ?

80

120

180

240

Answer: 180

Explanation:


6. Most high speed compression engines operate on ?

Otto cycle

Diesel cycle

Dual cycle

Carnot cycle

Answer: Dual cycle

Explanation:


7. The mean effective pressure obtained from engine indicator indicates the ?

maximum pressure developed

minimum pressure

instantaneous pressure at any instant

average pressure

Answer: average pressure

Explanation:


8. In the opposed piston diesel engine, the combustion chamber is located ?

above the piston

below the piston

between the pistons

anywhere

Answer: between the pistons

Explanation:


9. Which of the following pairs of parts can be considered as the higher pairs? 1. Pair of gear in mesh 2. Belt and Pulley 3. Cam and follower ?

1 and 2

2 and 3

1, 2 and 3

1 and 3

Answer: 1, 2 and 3

Explanation:


10. A simple mechanism consists of 11 simple revolute joints and 9 links. What is the degree of freedom of the mechanism ?

0

1

2

3

Answer: 2

Explanation: