IC Engine Questions and Answers – Scavenging Pumps

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This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Scavenging Pumps”.

1. Piston type pump is used for low speed and single or two cylinder engines.
a) True
b) False
View Answer

Answer: a
Explanation: None.
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2. Centrifugal blower is used for small and medium engines.
a) True
b) False
View Answer

Answer: b
Explanation: In fact, roots blower is used for small and medium engines.

3. Centrifugal blower is employed for large and high output engines.
a) True
b) False
View Answer

Answer: a
Explanation: None.
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4. Scavenging systems, based on charge flow are classifies as __________
a) uniflow
b) loop or reverse scavenging
c) cross scavenging
d) all of the mentioned
View Answer

Answer: d
Explanation: Scavenging systems, based on charge flow are classifies as
i) uniflow
ii) loop or reverse scavenging
iii) cross scavenging.

5. Pressure loss co-efficient is defined as the ratio between the main upstream and downstream pressures during the scavenging period.
a) True
b) False
View Answer

Answer: a
Explanation: None.
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6. __________ scavenging system has the highest efficiency.
a) Loop or reverse
b) Uniflow
c) Cross
d) None of the mentioned
View Answer

Answer: b
Explanation: Of all the above only uniflow scavenging system has the highest efficiency.

7. In __________ scavenging, the fresh air first sweeps across the piston top, moves up and then down finally out through the exhaust.
a) loop
b) uniflow
c) cross
d) none of the mentioned
View Answer

Answer: a
Explanation: None.
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8. In __________ scavenging system the inlet and exhaust ports are located on opposite sides of the cylinder.
a) loop
b) uniflow
c) cross
d) none of the mentioned
View Answer

Answer: c
Explanation: None.

9. Crankcase scavenging arrangement is very economical and inefficient in operation.
a) True
b) False
View Answer

Answer: b
Explanation: Actually, crankcase scavenging arrangement is very uneconomical and inefficient in operation.
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10. Scavenging process consists of __________
a) pre-blowdown stages
b) blowdown
c) scavenging
d) all of the mentioned
View Answer

Answer: d
Explanation: Scavenging process consists of
i) pre-blowdown stages
ii) blowdown stages
iii) scavenging
iv) additional charging.

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Youtube | Instagram | Facebook | Twitter