Explore topic-wise MCQs in Farm Machinery.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Farm Machinery knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the Carnot efficiency for a coal–fired power plant?

A. 65%
B. 74%
C. 56%
D. 90%
Answer» D. 90%
Discussion
2.

What is the Carnot Cycle Efficiency?

A. η = 1- QC/QH
B. η = QC/QH
C. η = QC/QH -1
D. η = QH/QC
Answer» B. η = QC/QH
Discussion
3.

What is the co-efficient of friction for lubricant?

A. Cf = \(\frac{ZN}{P} \)
B. Cf = \(\frac{PN}{Z} \)
C. Cf = \(\frac{ZP}{N} \)
D. Cf = ZPN
Answer» B. Cf = \(\frac{PN}{Z} \)
Discussion
4.

Which of the following is not a feature of the spark plug?

A. Varies from 0.5 to 0.85 mm
B. Used in cold engines
C. Dissipates the heat very quickly, it used for hot engine
D. Ratio of turns in primary and secondary is 1:100
Answer» E.
Discussion
5.

What is the basic reaction in the battery of the ignition system?

A. PbO5 + Pb + 4H2SO4 = 4PbSO2 + 4H20
B. 2PbO2 + 2H2SO4 = 2PbO + 2SO4 + 2H2O + O2
C. PbO2 + Pb + 2H2SO4 = 2PbSO4 + 2H2O
D. PbO2 + 2H2SO4 = 2PbSO4 + 2H2O
Answer» D. PbO2 + 2H2SO4 = 2PbSO4 + 2H2O
Discussion
6.

Relative efficiency is the ratio of _________

A. \(\frac{actual \, thermal \, efficiency}{mechanical \, efficiency} \)
B. \(\frac{actual \, thermal \, efficiency}{air-standard \, efficiency} \)
C. \(\frac{air-standard \, efficiency}{actual \, thermal \, efficiency} \)
D. \(\frac{mechanical \, efficiency}{actual \, thermal \, efficiency} \)
Answer» C. \(\frac{air-standard \, efficiency}{actual \, thermal \, efficiency} \)
Discussion
7.

Which of these is not an external combustion engine?

A. Beam engines
B. Steam engines
C. Stirling engines
D. Diesel engines
Answer» E.
Discussion
8.

Which of the following describes the displacement or swept volume?

A. Vs=\(\frac{Π}{4}\)∗d2l
B. Vs=\(\frac{Π}{16}\)∗d2l
C. Vs=\(\frac{Π}{32}\)∗d2l
D. Vs=\(\frac{Π}{4}\)∗d3l
Answer» B. Vs=\(\frac{Π}{16}\)∗d2l
Discussion