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CD0230. High Voltage, Fundamentals

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About this collection

The Seagull CBT bank is organised into modules covering safety, shipboard operations, maintenance and other topics. Original module names and codes are retained to help you find the topic you need.

“Seagull CBT — CD0230. High Voltage, Fundamentals” contains 42 questions across 1 collection.

Learning

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Sample questions and answers

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Which one of the following options best describes why connecting cables are usually fitted with flexible insulation?

One correct answer

  • Flexible insulation is necessary so connections can be made✓ Correct answer
  • Flexible insulation is cheaper than hard insulation
  • Flexible insulation is necessary so that cables can be pushed through conduit
  • Flexible insulation is thinner and lighter than hard insulation
Which of the following best describes what we mean by ‘power factor’ in an AC electrical system?

One correct answer

  • It is the proportion of apparent power which is delivered as active power✓ Correct answer
  • It is the ratio of power drawn from the generator to its maximum capacity
  • It is ratio of reactive power to active power
  • It is the proportion of apparent power which is converted to reactive power
The battery in the circuit shown has an output of 12 Volts. If the resistance of the upper resistor is 3 Ohms what current should be flowing in the circuit?

One correct answer

  • It cannot be calculated from the information given✓ Correct answer
  • 4 Amperes
  • 4 Amps
  • 36 Amps
The battery in the circuit shown has an output of 1.5 Volts. The resistors are 32.75 Ohms each. What voltage is dropped across the right hand resistor?

One correct answer

  • 1.5 Volts✓ Correct answer
  • 0.05 Volts
  • 0.75 Volts
  • It cannot be calculated from the information given
Which of the following best describes the meaning of the symbol Ω when found in an electrical calculation?

One correct answer

  • The quantity is expressed in Ohms✓ Correct answer
  • It is the impedance of the component
  • The quantity is expressed in Coulombs
  • It is the resistivity of the conductor material

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