Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

MarPow > Midterm (Quizzes) > Flashcards

Midterm (Quizzes) Flashcards

(65 cards)

Start Studying
1
Q

In this pump, the first stroke of the piston creates a vacuum, opens an inlet valve, closes the outlet valve and draws fluid into the piston chamber (the suction phase).

A

Piston Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

These pumps can handle high thickness fluids & solids without hurting them

A

Lobe Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

It operates on the same principle, but the two interlocking gears are of different sizes with one rotating inside the other

A

Gear Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

It is essentially resistance to flow

A

Viscosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

As the fluid enters the pump, it becomes trapped between the gaps in the ____

A

screws

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

These pumps are a kind of rotating positive dislocation pump, which means they force a stable amount of liquid for every revolution

A

Gear Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

It is a type of positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity

A

Rotary Vane Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

It operates by alternating filling a cavity and then displacing a given volume of liquid

A

Positive Displacement Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A characteristic of positive displacement, and especially reciprocating, pump designs

A

Pulsing Discharge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is being provided to maintain dry bilges to prevent the possibility in accumulation of water or oil?

A

Bilge System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

It used an external and an internal spur gears.

A

Internal Gear Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

This is used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow.

A

Centrifugal Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

It used two external spur gears.

A

External Gear Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do cyclic action of reciprocating pumps creates in the discharge with the fluid accelerating during the compression phase and slowing during the suction phase?

A

Pulses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

It refers to a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy.

A

Pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In a stablizer, active fins are being cotrolled by what control system?

A

Gyroscopic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Part of the steering gear system that mediate the coordination between the generated hydraulic pressure from pumps and rudder stock

A

Actuator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The type of steering gear system which composed of four hydraulic cylinders attached to the two arms of the actuator disc, on both sides

A

Ram type steering

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

In a gyroscopic control system, how does fins counteract the external force to prevent rolling?

A

Fin’s angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

It an equipment which is provided in every ship to meneuver or turn the ship in different directions

A

Steering gear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

These are fins or rotors mounted beneath the waterline and emerging laterally from the hull to reduce a ship’s roll due to wind or waves.

A

Stabilizer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

A type of steering gear system which fluid pressure is developed through purely mechanical means.

A

Fully hydraulic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Fins in large vessels are provided with flaps to increase the fins lift by how many percent?

A

15%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Which of the following statement regarding steering gear is true?

A

It can only be operated when the ship is in motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Steering gear actuators are now mainly electrically driven by ____
Power units
26
What benefits do retractable fins have over non-retractable fins?
It can save fuel consumption
27
Which of the following type of steering gear is predominantly used in vessels nowadays?
Electro-hydraulic
28
In a rotary vane steering gear system, there is a fixed housing in which two vanes rotates and having ____ chamber
4
29
In a fully electric type of steering gear system, electric motor are attached to ______
Steering rack
30
The type of steering actuator which is commonly used for steering gear system and quite expensive.
Ram type steering
31
How does fixed fins and keel reduce the roll of the vessel?
Hydrodynamic drag
32
They play a crucial role in generating the required pressure to create motions in the steering gear which can trigger the necessary rotary moments in the rudder system.
Hydraulic pump
33
Which of the following statements regarding stabilizers are true?
They are efficient in higher velocity
34
Which type of steering gear system that hydraulic pumps are being replaced by electric motors?
Fully Electric
35
Steering gear system can be classified into two according to the type of actuator they have which are ____ and ____
Ram and rotary vane
36
Which type of generator is suitable for running bigger motors and appliances?
DC-powered generator
37
It is a machine that transforms electric energy into mechanical energy in form of rotation.
DC Motor
38
The type of motor which is being used in applications where the loads varies from time to time.
Induction Motor
39
Which of the following is true regarding the DC generators?
Easy to parallel with
40
It is a part of motor is composed of stationary set of conductors wound in coils on an iron core.
Stator
41
The type of motors which uses brushes and a commutator to operate.
DC motors
42
Generators and motors work on the principle of magnetic induction in which _____ is induced by a changing magnetic field.
Voltage
43
It is an AC electric motor in which the electric current in the rotor needed to produce torque and is obtained by electromagnetic induction.
Induction motor
44
The type of motors which do not use brushes and a commutator to operate.
AC Motors
45
What is the fundamental difference between the alternating current and direct current?
Direction of flow
46
Which of the following converts alternating current into direct current and vice versa?
Converter
47
Which of the following equipment converts alternating current into direct current?
Rectifier
48
It is an equipment which convert mechanical energy into electrical energy.
Generator
49
It is an electrical generator that converts mechanical energy to electrical energy.
Alternator
50
It is an equipment which convert electrical energy into mechanical energy.
Motor
51
Ventilation is being used to remove or dissipate gases from the cargo hold such as CO2 and ethylene which came from ______
Fruits
52
It is a system or a machine that treats air in a enclosed area via a refrigeration cycle in which warm air is removed and replaced with cooler and more humid air.
Air conditioning
53
Which of the following is not a component of refrigeration plant?
Ventilation
54
Ventilation system can be categorized into four types: exhaust, supply, ______ and ______.
Balanced - heat recovery
55
It is the intentional introduction of ambient air into a space and is mainly used to control indoor air quality by diluting and displacing indoor pollutants.
Ventilation
56
What components of refrigeration plant that drive fluid around the plant.
Compressor
57
The type of ventilation system in a insulated compartment where temperature and carbon dioxide is being controlled.
Temperature control system
58
It is the component of the refrigeration plant where the refrigerant's temperature and pressure is being reduced.
Expansion valve
59
The component of the refrigeration plant where the vapor refrigerant is being condensed into liquid.
Condenser
60
When stowing containers under the deck, which of the following should be remembered?
Take maximum advantage of any mechanical ventilation
61
The condensation in the cargo hold of a ship can appear in two basic form which are ______ and _______.
Ship sweat - Cargo sweat
62
Which of the following statements is not true regarding ventilation?
Ventilation can handle pockets of moisture in a cargo tank.
63
What component of the refrigeration plant that is located the space being cooled?
Evaporator
64
Condensation on the side of the tank adjacent to the sea water normally produce sweat because of the temperature of metal is _______ of the surrounding air.
Below the dew point
65
It is used to reduce the dew point of air in ships' compartments by de-humidification to the point at which ships' sweat and cargo sweat cannot occur.
Mechanical ventilation

MarPow (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions