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TOTS 1B-Electrical, Electronic and Operations

CBT 56 questions

First 5 of 56 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    A pump motor is found to be running at abnormally high temperatures. Which of the following would be the most likely cause of this condition?
    • A loose terminal connection.
    • A fouled or damaged impeller.
    • Low winding insulation.
    • The thermal overload is set too low.

  2. Question 2

    A three phase DOL (Direct on line) motor is rotating in the wrong direction. How can this be corrected?
    • Interchange two of the three phases at the motor OR starter.
    • Fit a reversing contactor.
    • Install a larger cable.
    • Stop and restart the motor.

  3. Question 3

    An insulation resistance (megger) test on a motor located on the open deck of a vessel provides an apparent low reading (1MΩ). Which course of action should be taken?
    • Check the running current of the motor under full load conditions.
    • Check the maintenance history to identify any deterioration in insulation properties since previous tests.
    • Immediately remove the motor from service.
    • Replace the motor with a spare.

  4. Question 4

    Despite its vessel safety function, which of the following shutdowns must be fitted on emergency generator engines?
    • High cooling water temperature.
    • High oil mist concentration.
    • Low lub oil pressure.
    • Over speed.

  5. Question 5

    For Direct on Line (DOL) Starting, what would you expect the starting current to be?
    • 6 - 10 × normal current.
    • 0,5 - 1 × normal current.
    • 10 - 20 × normal current.
    • 2 - 3 × normal current.

Preview — 5 of 56 questions

You are seeing the first 5 questions with answers. Unlock the remaining 51 to study the whole test — online or offline.

About this CBT test

TOTS 1B-Electrical, Electronic and Operations is a CBT test with 56 questions and verified answers. Common topics include: emergency generator, electrical equipment, insulation resistance, motor, system, condition, power, expect.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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