MCA Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam - MCA Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam

Question 1

According to electron theory, which statement best distinguishes conductors, semiconductors and insulators?

Conductors have many free electrons, semiconductors have a moderate number, insulators have almost none free to move Conductors have no free electrons while insulators have many free electrons Semiconductors always have more free electrons than metals Insulators conduct only when reverse-biased like a diode

Correct Answer:

Conductors have many free electrons, semiconductors have a moderate number, insulators have almost none free to move

Question 2

Which pair correctly matches basic electrical quantities and their SI units?

Charge: coulomb (C); current: ampere (A); potential difference: volt (V); power: watt (W) Charge: ampere; current: coulomb; potential difference: watt; power: volt Charge: joule; current: ohm; potential difference: farad; power: henry Charge: weber; current: tesla; potential difference: siemens; power: coulomb

Correct Answer:

Charge: coulomb (C); current: ampere (A); potential difference: volt (V); power: watt (W)

Question 3

The resistance of a uniform metallic conductor is proportional to which combination of its physical parameters?

Length divided by cross-sectional area (R = ρL/A) Cross-sectional area divided by length Volume only, independent of shape Surface area only, independent of length

Correct Answer:

Length divided by cross-sectional area (R = ρL/A)

Question 4

A copper conductor has resistance 0.40 Ω at 0 °C. Taking α0 for copper as 0.0043 /°C, what is its approximate resistance at 50 °C?

0.486 Ω 0.400 Ω 0.215 Ω 0.860 Ω

Correct Answer:

0.486 Ω

Question 5

How is the state of charge of a lead–acid cell commonly assessed using a hydrometer?

By measuring the relative density (specific gravity) of the electrolyte By measuring only the open-circuit terminal voltage at −20 °C By measuring plate colour with a magnetometer By measuring electrolyte pH alone with litmus

Correct Answer:

By measuring the relative density (specific gravity) of the electrolyte

Question 1

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Prepare with the MCA Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam practice quiz. This question bank includes 100 questions covering current, series, circuit, power, and resistance. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MCA Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam

This practice set contains 100 questions from the matching question bank and focuses on current, series, circuit, power, and resistance. 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 Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam

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