Welcome to your MEO Class 4 - Electrical Test 5
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1
Common emitter amplifier is characterized by
2
Which statements are true of starts used for electric motor. Mcq
3
In capacitor, energy stored is? SURE
4
Which of the following are TRUE with regards to a Synchro scope? (MCQ)
5
In common collector transistor collector amplifier voltage gain
6
Current applied to lead acid battery would lead to
7
Motor having rheostat in motor circuit to vary speed in cell
8
Voltage generator by most AC generators is fed from the machine to the bus by means of
9
NER- what is true for high voltage circuit?
10
Which of the following is not true about star delta starters
11
Motor overhaul is to be done which statements are true?
12
Motor having rheostat in motor circuit to vary speed in cell
13
Squirrel cage used in synchronous motor for?
14
Which of the following are true for shipboard storage batteries?
15
Disadvantage of ward Leonard system (mcq)
16
Large cable sizes are formed as individual conductors that may be comprised of several smaller strands to
17
Which of the following does not change in a transformer?
18
An amplifier is said to suffer distortion when its output is
19
An amplifier is said to suffer from distortion when its output is
20
The depletion region in semiconductor diode is due to
21
Max full wave rectifier efficiency possible by two diodes from a sinusoidal wave is (Half wave is 40.6%)
22
Fuses replaced in series with thermal trip type ckt breakers are used for?
23
Which statement is true about any soft starters used in electrical motor
24
Which statement is true for reactor starter for electrical motor
25
Mercury filled thermometer should never be used to determine the temp of the battery electrolyte bcoz accidental breakage of thermometer can cause
26
Which trip is present in emergency generator?
27
Which of the following statements represents an application of a silicon controlled rectifier?
28
Which of the following are true for Thermistors (mcq)
29
Reversing any two of the three rotor leads on induction motor will _____________.
30
Which statement is true for any storage battery
31
Across the line starters are used with AC motors to provide
32
For t/c, leak current in P-N diode is produced by?
33
Which of the following are TRUE with regards to incorrect synchronization of Alternators?
34
To repair a small electric motor which was submerged in saltwater, you should
35
Electric motor stator- true statements? (mcq)
36
Which of the following are benefits of modifying ward Leonard control system by replacing motor set with a thyristor speed controller
37
Which of the following are TRUE with regards to incorrect synchronization of Alternators?
38
Which statement is true for any storage battery
39
Arrange the following in correct sequence foe achieving correct KW sharing when an AC generator is paralleled with live bus bar and generator has some owe factor as others in system 1. Synchronize the incoming generator in terms of voltage, frequency and phase. 2. Trim voltage of the machine which has/ have lower load current to increase excitation 3. Increase speed on incoming machine while lowering than that of others connected to system 4. Adjust machine voltage to keep overall system efficiency ready. 5. Adjust the governor control switch on main switch board to increase the fuel to its prime mover
40
For leading power circuits which of the following can be used?
41
Which of the following is not self-starting motor?
42
The main use of a Class-C amplifier is
43
Which of the following will prevent a DC generator from becoming motorized?
44
which of the following is true for synchroscope (mcq)
45
What happens when battery is excess charged?
46
Which of the following are true about a temp measuring ckt employed in in a data logger system? 1. A Wheatstone bridge can be used in conjunction with a Wheatstone bridge induction thermometer 2. Thermometer is energized using a constant current source and voltage developed is measured in potentiometer type method 3. Inductance of thermometer will change with change in temp
47
An operating characteristic appearing on the name plates of shipboard AC motor is ___________
48
In an earth neutral system, an earth fault will occur only
49
To prevent the race of DC series, motor what arrangement should make?
50
Which of the following method used for biasing a BJT in integrated circuits is considered independent of transistor beta?