Explore topic-wise MCQs in Mechanical Engineering.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

Oxides of nitrogen in Petrol engine exhaust can be reduced by the following methods:1. Use of 5% lean mixture2. Advancing the spark timing3. Recirculating a fraction of exhaust gas4. Using an oxidation catalyst in the exhaust manifoldWhich of the above statements is/are correct?

A. 1 and 2
B. 2 only
C. 3 and 4
D. 3 only
Answer» E.
2.

Oxides of nitrogen in the engines exhaust can be reduced by the following methods:1. Decrease in compression ratio2. Exhaust gas recirculation3. Use of 5% lean mixture4. Use of oxidation catalysts in exhaust manifold.The correct methods are

A. 1 and 2
B. 1 and 3
C. 1, 2 and 4
D. 2, 3 and 4
Answer» D. 2, 3 and 4
3.

In Diesel engines, the control of black smoke in the exhaust can be achieved by:1) Running the engine at lower load.2) Maintaining the injection system perfect.3) Using Diesel fuel of higher Cetane number.Which of the above statements are correct?

A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only
Answer» C. 1 and 3 only
4.

Pune-based organisation________ conducted a study using a 15% M - 15 methanol blend in vehicles and tested them for 3,000 km to evaluate emissions in real-world conditions as well as to check the performance of the vehicles.

A. Automotive Research Association of India (ARAI)
B. Research Association of India (RAI)
C. Automotive Organisation (AO)
D. Vehicle Organisation of India (VOI)
Answer» B. Research Association of India (RAI)