Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?

A 180°

B 125°

C 235°

D 200°

Review Detailed Answer

Correct Answer: 235°

The specific fuel consumption per BH hour for a petrol engine is approximately__________________?

A 0.15 kg

B 0.2 kg

C 0.25 kg

D 0.3kg

Review Detailed Answer

Correct Answer: 0.25 kg

Crankcase explosion in I.C. engines usuall occurs as ___________________?

A first a mild explosion followed by a bi explosion

B first a big explosion followed by a mil explosion

C both mild and big explosions occi simultaneously

D never occurs

Review Detailed Answer

Correct Answer: first a mild explosion followed by a bi explosion

The maximum temperature in the I.C. engine cylinder is of the order of ________________?

A 500- 1000°C

B 1000- 1500°C

C 1500-2000°C

D 2000-2500°C

Review Detailed Answer

Correct Answer: 2000-2500°C

The fuel in diesel engine is normally injected at pressure of_________________?

A 5-10 kg/cm2

B 20-25 kg/cm2

C 60-80 kg/cm2

D 90-130 kg/cm2

Review Detailed Answer

Correct Answer: 90-130 kg/cm2

The pressure and temperature at the end of compression stroke in a petrol engine are of the order of___________________?

A 4 – 6 kg/cm2 and 200 – 250°C

B 6 – 12 kg/cm2 and 250 – 350°C

C 12 – 20 kg/cm2 and 350 – 450°C

D 20 – 30 kg/cm2 and 450 – 500°C

Review Detailed Answer

Correct Answer: 6 – 12 kg/cm2 and 250 – 350°C

In case of gas turbines, the gaseous fuel consumption guarantees are based on________________?

A high heat value

B low heat value

C net calorific value

D middle heat value

Review Detailed Answer

Correct Answer: low heat value

Fuel oil consumption guarantees for I .C. engine are usually based on__________________?

A low heat value of oil

B high heat value of oil

C net calorific value of oil

D calorific value of fuel

Review Detailed Answer

Correct Answer: high heat value of oil

All heat engines utilize_____________________?

A low heat value of oil

B high heat value of oil

C net claorific value of oil

D calorific value of fuel

Review Detailed Answer

Correct Answer: low heat value of oil

The calorific value of gaseous fuels is expressed in terms of__________________?

A kcal

B kcal/kg

C kcal/m2

D kcal/m²

Review Detailed Answer

Correct Answer: kcal

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?

The specific fuel consumption per BH hour for a petrol engine is approximately__________________?

Crankcase explosion in I.C. engines usuall occurs as ___________________?

The maximum temperature in the I.C. engine cylinder is of the order of ________________?

The fuel in diesel engine is normally injected at pressure of_________________?

The pressure and temperature at the end of compression stroke in a petrol engine are of the order of___________________?

In case of gas turbines, the gaseous fuel consumption guarantees are based on________________?

Fuel oil consumption guarantees for I .C. engine are usually based on__________________?

All heat engines utilize_____________________?

The calorific value of gaseous fuels is expressed in terms of__________________?