PPD/PPS/PASGT

Question 1

What are the traingle of fire?

Answer 1

Oxygen, Heat, and Fuel. A fire naturally occurs when these elements are present

Question 2

What is sterling engine?

Answer 2

Stirling engines operate by cyclically compressing and expanding a working gas (like
air or helium) in a sealed chamber.

Question 3

What are Steam Engines

Answer 3

They burn fuel (like coal, oil, or wood) to heat water in a boiler, creating steam. The
steam is then used to drive a piston or turbine.

Question 4

What are dynamic pumps?

Answer 4

an instrument that directly transforms kinetic energy into mechanical energy to move fluids

Question 5

What is a plate type heat exchanger?

Answer 5

uses thin, corrugated metal plates to transfer heat between two fluids. Alternating (Hot and Cold fluids)

For: Heating, refrigeration, and cooling

Question 6

What is a tube type heat exchanger?

Answer 6

The hotter fluid passes through the tubes, and the cooler fluid flows around the tube

Question 7

What is SCADA?

Answer 7

Supervisory Control and Data Acquisition. SCADA is a real-time monitoring and control system used to
supervise and control shipboard processes

Question 8

What is HMI?

Answer 8

Human Machine Interface. Presents real-time
data, alarms, and system statuses.

Question 9

What is Otto cycle?

Answer 9

Two adiabatic processes and two isochoric (constant volume) processes. Commonly used to model Gasoline Engines

Question 10

What is Diesel cycle?

Answer 10

Two adiabatic processes and two isobaric (constant pressure) processes.

Question 11

How does marine air compressor work?

Answer 11

A marine compressor compresses air for engine starting, tools, and control systems by drawing in air, compressing it, cooling it, and storing it for distribution.