Exam Details
2023 Mechanical Engineering
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Questions
150
Duration
180 mins
Package
Indian Economic Service and Indian Statistical Service Examination - Previous Year Papers
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Topic distribution
Subtopic distribution
Difficulty distribution
150questions
Medium
50
33.3%
Hard
50
33.3%
Easy
50
33.3%
Question type distribution
150questions
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150
100%
Syllabus
Full Syllabus
Sample questions from this paper
Questions are selected across the paper subjects wherever the paper contains that variety.
2023 · Unclassified
2023 Mechanical Engineering
The cubic capacity of a four-stroke over-square spark-ignition engine is 245 cc. The over-square ratio is 1:1. The clearance volume is 27·2 cc. What is the stroke length of the engine ?
2023 · Unclassified
2023 Mechanical Engineering
A 42·5 kW engine has a mechanical efficiency of 85%. If the frictional power is assumed to be constant with load, what is the mechanical efficiency at 60% of the load ?
2023 · Unclassified
2023 Mechanical Engineering
A single-cylinder engine running at 1800 rpm develops a torque of 8 N-m. The indicated power of the engine is 1·8 kW. What is the loss due to friction power as the percentage of brake power ?
2023 · Unclassified
2023 Mechanical Engineering
A gasoline engine working on Otto cycle consumes 8 litres of gasoline per hour and develops 25 kW. The specific gravity of gasoline is 0·75 and its calorific value is 44000 kJ/kg. What is the indicated thermal efficiency of the engine ?
2023 · Unclassified
2023 Mechanical Engineering
Directions for the following two (02) items :
Read the following information and answer the two items that follow :
The bore and stroke of a water-cooled, vertical, single-cylinder, and four-stroke diesel engine are 80 mm and 110 mm respectively and the torque is 23·5 Nm.
What is the brake mean effective pressure of the engine ?
2023 · Unclassified
2023 Mechanical Engineering
Directions for the following two (02) items :
Read the following information and answer the two items that follow :
The bore and stroke of a water-cooled, vertical, single-cylinder, and four-stroke diesel engine are 80 mm and 110 mm respectively and the torque is 23·5 Nm.
What is the mean effective pressure if its rating is 4 kW at 1500 rpm ?