This set of Automotive Engine Components Design Multiple Choice Questions & Answers (MCQs) focuses on “ IC Engine – Crankshaft”.
1. Which of the mentioned below is not a portion of the crankshaft?
a) Crankpin
b) Crank web
c) Connecting rod
d) Gudgeon pin
View Answer
Explanation: Crankpin, crank web, gudgeon pin are all the connecting parts of the crankshaft with other components and connecting rod is a component that connects piston and crankshaft.
2. The big end of the connecting rod is connected to which portion of the crankshaft?
a) Shaft
b) Spigot
c) Crankpin
d) Spline
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Explanation: The big end of the connecting rod is attached to the crankpin and the crank web connects the crankpin to the shaft portion. The connecting rod is bolted to the crankshaft.
3. Crank web connect the_____ to the shaft portion.
a) spline
b) spigot
c) crankpin
d) crank web
View Answer
Explanation: The big end of the connecting rod is attached to the crankpin and the crank web connects the crankpin to the shaft portion. Based on the firing order the crank web is designed.
4. The crankshaft seat on which part and transmit power?
a) Main bearing
b) Small bearing
c) Ball-bearing
d) Minor bearing
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Explanation: The shaft portion rotates in the main bearings and transmits power to the outside source through the belt drive, gear drive, or chain drive.
5. Which are the two types of the crankshaft?
a) Center crankshaft
b) Side and center crankshaft
c) Side shaft
d) Top and bottom crankshaft
View Answer
Explanation: There are two types of crankshaft side crankshaft and center crankshaft. Side crankshaft is also called the overhung crankshaft.Side crankshaft is supported by two bearings.
6. The side crankshaft is also called as _____
a) convex crankshaft
b) suspended crankshaft
c) overhung crankshaft
d) concave crankshaft
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Explanation: There are two types of crankshaft side crankshaft and center crankshaft. Side crankshaft is also called the overhung crankshaft. One end of the side crankshaft acts as a cantilever.
7. Side crankshaft has how many bearings?
a) Two bearings
b)Three bearings
c) Four bearing
d) Five bearing
View Answer
Explanation: Side crankshaft has only one crank web and requires only two bearings for support. Hence Side crankshaft has two bearings.One end of the side crankshaft acts as a cantilever.
8. Centre crankshaft has how many bearings?
a) Six bearing
b) One bearing
c) Two bearing
d) Three bearings
View Answer
Explanation: The center crankshaft has two webs and three bearings for support. It is used in radial aircraft engines. Hence, center crankshaft three has bearings.
9. Which are the two types of crankshaft based on many crankpins?
a) Single and double throw
b) Two and multi throw
c) Single throw and multi throw
d) Multi throw
View Answer
Explanation: Crankshafts are also classified as single-throw and multi-throw crankshaft depending upon the number of crankpins. Hence, Single throw and multi throw is the right answer.
10. Single throw crankshaft has how many crankpins?
a) Two crankpins
b) One crankpin
c) Three crankpins
d) Five crankpins
View Answer
Explanation: The single throw crankshaft has one crankpin and multi throw crankshaft has more than one crank pin. Single throw has a single web per Crankpin. Hence, One crankpin is the right answer.
11. A crankshaft having more than one or more crankpin is known as?
a) Double throw crankshaft
b) Multi throw crankshaft
c) Single throw crankshaft
d) Single and double throw crankshaft
View Answer
Explanation: The single throw crankshaft has one crankpin and multi throw crankshaft has more than one crank pin. Multi throw crankshaft is used in high-performance engines.
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