Engine Category > EM3-Operate, Monitor and Evaluate Engine Performance

About this collection

Videotel questions are grouped by professional topic, including machinery, electrical equipment, fuel and ballast operations. Choose a subject relevant to your preparation.

“Видеотел — Engine Category > EM3-Operate, Monitor and Evaluate Engine Performance” contains 44 questions across 1 collection.

Learning

Learning mode has no timer. After answering, you see feedback and the correct options. You can return to a question and repeat a topic.

Exam

A practice exam lasts up to 60 minutes and includes up to 50 questions from the selected collection. Correct answers and results appear after completion.

Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

A vessel has a propeller with 3828 mm pitch and makes 109 RPM. If the sea speed is 12.8 knots, what is the slip ?

One correct answer

• 1) 8.3 %
• 2) 3.8 %
• 3) 5.3 %✓ Correct answer
• 4) 3.5 %

This is an actual lay-out drawing of a pneumatic amplifier block. Where is the 20 psi supply air admitted ?

One correct answer

• 1) At air passage item 12
• 2) At air passage item 13✓ Correct answer
• 3) At air passage item 14
• 4) At air passage item 15

On which part of the Pneumatic Amplifier is the nozzle back pressure of the nozzle/flapper (NBP) acting ?

One correct answer

• 1) On spring S
• 2) On ball valve B
• 3) On valve V
• 4) On membrane M✓ Correct answer

What is the amplification factor (K) of a pneumatic amplifier ?

One correct answer

• 1) K = 4
• 2) K = 12
• 3) K = 16✓ Correct answer
• 4) K = 20

If the length of "a" is equal to the length of "b" what will be the proportional band "PB" of this pneumatic controller ?

One correct answer

• 1) 0 %
• 2) 25 %
• 3) 50 %
• 4) 100 %✓ Correct answer

Before you start