Welcome to your MEO Class 4 - Electrical Test 6
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1
When tow generators are running in parallel and field of one of them is weakened too much then it will SURE
2
which of the following is true for synchroscope (mcq)
3
A control action which produces a corrective signal relative to the length of time the controlled variable has been away from the set point, is known as
4
wound rotor motor changing the speed torque characteristic control and speed control purpose
5
In properly biased npn transistor most free electron from emitter
6
Characteristic of laser light
7
which of the following used in earth neutral system
8
the amount of current needed for full protection in case of iccp system for a particular ship will be most affected by
9
In common collector transistor collector amplifier voltage gain
10
which of the following consider to be the safest protection from static electricity discharge when connecting or disconnecting cargo hose and metal arms?
11
What will be in motor, for electro steering gear?
12
which of the following prevents moisture condensation in a weather deck switch board SURE 1.installing light bulb in pedestal stand 2.coat internal of switch box With epoxy sealed 3.venting the switchboard regularly. 4 using strip heater
13
Advantage of nickel cadmium battery
14
3 phase, if it is connected insulated neutral earth system to the ship hull short crt
15
which of the device protect the generator over load
16
impurities in semiconductor
17
For faithful amplification, a transistor must :
19
capacitor and resistor connected in series with the sine wave generator frequency is set so that the capacitor reactance is equal to the resistance and thus equal amount of voltage appears across each component, what happen when frequency. What happens if the frequency is increased?
20
Ground occur in the electrical machinery as a result of insulation failure.
21
3 phase insulated earth system one of the path contact with hull
22
For a given line voltage, four heating coils will produce maximum heat when connected in
23
while doping the semiconductor is adding impurities, why it is called impurities
24
BJT transistor used as an amplifier it operates in
25
The main use of a Class-C amplifier is
27
TRUE About Battery storage
28
Unique feature of a cc transistor amplifier circuit is
29
Which of the following is/are necessary precaution(s) for paralleling an AC Generator with live bus bars? I. Generator frequency should be close to but slightly lower than bus bar frequency II. Generator voltage should be equal to bus bar voltage III. Current in generator circuit should be less than bus bar current IV. Generator voltage should be in phase with bus bar voltage
30
Class A amplifier percentage?
31
NER- what is true for high voltage circuit?
32
3 phase, if it is connected insulated earth system to the ship hull
33
Which statement is true in relation to AUTO TRANSFORMER? (mcq)
34
Which of the following is true with regards to use regenerative braking in a reversible pole change multispeed type AC induction motor? (Multiple choice question)
35
Doping materials are called impurities because they
36
Which of the following is/are necessary precaution(s) for paralleling an AC Generator with live bus bars? I. Generator frequency should be close to but slightly lower than bus bar frequency II. Generator voltage should be equal to bus bar voltage III. Current in generator circuit should be less than bus bar current IV. Generator voltage should be in phase with bus bar voltage
37
Which allow to equalize power factor of two alternator
38
With regards to AVR which all statements are true?
39
Which of the following is true regarding distribution system on tankers?
40
n type semiconductor doping substance
41
Capacitor banks are connected with ac induction motor
42
The basic control action of a magnetic amplifier depends upon _____________.
43
Transformer having laminated core?
44
ambient temperature rise in transistor
45
which of the following true regards to syncrhoscope
46
Which of the following statement is false for lead acid battery?
47
Class A amplifier coupled with transformer what will be efficiency
48
class B amplifier output
49
ACB trips at what condition
50
What happens to the amount of energy stored in the electromagnetic field when the current through an inductor is cut in half?
