Welcome to your MEO Class 4 -Electrical Test 2
Click NEXT to start your Test
1
Which of the following represents the accepted method of cleaning dust and foreign particles from electrical equipment while limiting damage to electric components?
2
AC circuits possess characteristics of resistance, inductance, and capacitance. The capacitive reactance of a circuit is expressed in
3
The electrolyte in a lead-acid storage battery consists of distilled water and _____________.
4
The electrical energy necessary to transmit a person's voice over a sound-powered telephone circuit is obtained from ____________.
5
The current at which a magnetic-type overload relay tends to trip may be decreased by raising the plunger further in to the magnetic circuit of the relay. This action_________.
6
Regarding an AC generator connected to them am electrical bus; as the electric load and power factor vary, a corresponding change is reflected in the generator armature eaction. These changes in armature reaction are compensated for by the _____________.
7
A circuit breaker and a fuse have a basic similarity in that they both _______
8
SOLAS regulations state that a normal source for emergency loads and power on a cargo vessel must be supplied from ____________.
9
A magnetic blowout coil in a DC motor controller contact or functions to
10
Ammeters and voltmeters used in sinusoidal AC power systems indicate which of the following values of the wave forms measured?
11
While on watch in the engine room at sea with only one ship's service shaft generator on line, the entire plant suddenly blacks out without warning. After restoring power, the cause for this casualty could be attributed to which of the following faults?
12
With reference to a Data Logger for a refrigeration system, which of the following parameters should be monitored?
13
The electrolyte used in a nickel-cadmium battery is distilled water and ______________.
14
In refer compressor what are the readings we are entering in logbook
15
The shunt used in an ammeter should be connected in____________.
16
Which of the listed logic gates is considered to be a BASIC building block (basic logic gate) used in logic diagrams?
17
In a PNP transistor, the p-regions are
18
The greatest detrimental effect on idle electrical equipment, such as cargo pump motors, is the
19
A semiconductor that decreases in resistance with an increase in temperature is known as a ___________.
20
An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an ____________.
21
The shunt used in an ammeter should be connected in____________.
22
With reference to a Data Logger for a refrigeration system, which of the following parameters should be monitored?
23
A storage battery for an emergency lighting and power system must have the capacity to _____________.
24
A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter method. Therefore, the meters should be connected with _____________.
25
Brushless generators are designed to operate without the use of ___________.
26
Which of the following physical characteristics does a wound-rotor induction motor possess that a squirrel cage motor does not?
27
Which of the following statements is a Safety regulation concerning emergency generator diesel engines? (SOLAS / Cargo Ship Safety Construction Rules)
28
Low horsepower, polyphase, induction motors can be started with full voltage by means of ___________.
29
The rated temperature rise of an electric motor is the _____________.
30
An electrical device which prevents an action from occurring until all other required conditions are met is called a /an ___________.
31
In what range of voltages is the transistor in the linear region of its operation?
32
In an induction motor, rotor currents are circulated in the rotor by _______
33
When troubleshooting most electronic circuits, "loading effect" can be minimized by using a voltmeter with a/an ___________________.
34
Local action in a nickel-cadmium battery is offset by _____________.
35
While starting a main propulsion synchronous motor, the ammeter pegs out at maximum and then returns to the proper value after synchronization. This indicates that the
36
The function of a rectifier is similar to that of a _______.
37
Moisture damage, as a result of condensation occurring inside of the cargo winch master switches, can be reduced by __________________.
38
The basic control action of a magnetic amplifier depends upon _____________.
39
The full torque electric brake on an electric cargo winch functions to _____________.
40
SOLAS regulations require emergency diesel engine starting systems to have sufficient capacity to provide power for at least ____________.
41
When the current through the coil of an electromagnet reverses, the direction of the magnetic field also reverses.
42
Which of the damages listed can occur to the components of a winch master control switch, if the cover gasket becomes deteriorated?
43
An electric tachometer receives the engine speed signal from a _______________.
44
Which of the following statements represents an application of a silicon controlled rectifier?
45
Which of the following statements concerning analog and digital devices are correct?
46
When choosing a battery for a particular application, major consideration should be given to the battery's
47
Protection against sustained overloads occurring in molded-case circuit breakers is provided by a/an _________.
48
An operating characteristic appearing on the name plates of shipboard AC motors is _____________.
49
The freezing point of the electrolyte in a fully charged lead-acid battery will be _____________.
50
Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. This element consists of a ______________.
