SSC JE ME 2023 Paper 2 Question Paper (04-Dec-2023)

Question 1

Which of the following points correctly pairs boiler mountings with primary functions of boilers?(i) Manhole - Melts and releases steam if the water level in the boiler drops too down,(ii) Feed check valve - Prevents backflow of water into the feed pump,(iii) Pressure gauge - Releases excess steam from the boiler to prevent overpressure,(iv) Fusible plug - Allows the boiler to be drained for inspection and maintenance

Accepted Answer

(ii)

Answer

(iii)

Answer

(iv)

Answer

(i)

Question 2

What is the pressure increase inside a soap bubble (&Delta;p), which has two interfaces with air, an inner and outer surface of nearly the same radius 'R' ?(Consider that '&gamma;' is the coefficient of surface tension.)

Accepted Answer

&Delta;p = $\frac{4\gamma}{R}$

Answer

&Delta;p = $\frac{\gamma}{2R}$

Answer

&Delta;p = $\frac{2\gamma}{R}$

Answer

&Delta;p = $\frac{\gamma}{R}$

Question 3

The Rankine efficiency of a steam power plant:

Accepted Answer

improves in winter as compared to that in summer

Answer

improves in summer as compared to that in winter

Answer

worst in winter as compared to that in summer

Answer

is unaffected by climatic conditions

Question 4

According to laws of thermodynamics, which of the following statements is INCORRECT?

Accepted Answer

Heat energy can be fully converted into work energy.

Answer

Fraction of heat energy can be converted into work energy.

Answer

Work energy can be fully converted into heat energy.

Answer

The first law of thermodynamics is the same as the law of conservation of energy.

Question 5

A diesel engine has a compression ratio of 15 and heat addition at a constant pressure takes place at 6% of stroke. Find the air standard efficiency of the diesel engine.(Take &gamma; for air = 1.4.)

Accepted Answer

&eta;diesel = 61.2%

Answer

&eta;diesel = 41.2%

Answer

&eta;diesel = 51.2%

Answer

&eta;diesel = 59.5%

SSC JE ME 2023 Paper 2 Question Paper (04-Dec-2023)

SSC JE Mechanical Paper 1 & Paper 2 Mock Test Series 2026

SSC JE Mechanical Paper 1 & Paper 2 Mock Test Series 2025 (Updated)

AE & JE Mechanical Engg. Exams Previous Year Papers Mock Test