MCA SV Auxiliary Equipment Part 1 Practice Questions - MCA Small Vessel Engineering - Auxiliary Equipment Part 1 (Qualifications Scotland SQA Written Examination) Exam - MCA SV Auxiliary Equipment Part 1 Practice Questions - MCA Small Vessel Engineering - Auxiliary Equipment Part 1 (Qualifications Scotland SQA Written Examination) Exam

Question 1

What is the primary function of a screw-down non-return (SDNR) valve on a small vessel?

To throttle flow in both directions equally To allow flow in one direction only while providing a positive shut-off when screwed down To relieve excess system pressure to the bilge To isolate hydraulic rams without a seat

Correct Answer:

To allow flow in one direction only while providing a positive shut-off when screwed down

Question 2

Which valve type is most suitable for quick quarter-turn isolation of low-to-medium pressure piping on a small vessel?

Screw-lift globe valve Gate valve with multi-turn handwheel Ball valve Needle valve

Correct Answer:

Ball valve

Question 3

A simple plug cock controls flow by:

Lifting a disc straight off a seat with a screw stem Rotating a tapered or cylindrical plug with a port through its body Pinching a flexible elastomer tube between two jaws Sliding a wedge between two seats in the line of flow

Correct Answer:

Rotating a tapered or cylindrical plug with a port through its body

Question 4

Compared with a safety valve, a pressure relief valve on auxiliary systems is typically designed to:

Lift fully at a set pressure and remain wide open until reseating well below set pressure (pop action for compressible fluids on boilers/steam) Open progressively to relieve excess pressure and reseat with a small blowdown, often protecting pumps and hydraulic/liquid systems Only indicate pressure and never discharge fluid Act solely as a vacuum breaker on cargo tanks

Correct Answer:

Open progressively to relieve excess pressure and reseat with a small blowdown, often protecting pumps and hydraulic/liquid systems

Question 5

Why is bronze or gunmetal often preferred to ordinary cast iron for seawater valves on small vessels?

Bronze is always cheaper than cast iron Bronze and gunmetal have better corrosion resistance in seawater service than ordinary cast iron Cast iron cannot be machined into valve seats Bronze melts at a lower temperature so it is easier to cast at sea

Correct Answer:

Bronze and gunmetal have better corrosion resistance in seawater service than ordinary cast iron

Exam overview

About this Exam

Prepare with the MCA SV Auxiliary Equipment Part 1 Practice Questions - MCA Small Vessel Engineering - Auxiliary Equipment Part 1 (Qualifications Scotland SQA Written Examination) Exam practice quiz. This question bank includes 100 questions covering valve, pump, steering, gear, and hydraulic. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MCA SV Auxiliary Equipment Part 1 Practice Questions - MCA Small Vessel Engineering - Auxiliary Equipment Part 1 (Qualifications Scotland SQA Written Examination) Exam

This practice set contains 100 questions from the matching question bank and focuses on valve, pump, steering, gear, and hydraulic. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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MCA SV Auxiliary Equipment Part 1 Practice Questions - MCA Small Vessel Engineering - Auxiliary Equipment Part 1 (Qualifications Scotland SQA Written Examination) Exam

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