Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Electricity 2 > Electricity 2 > Flashcards

Electricity 2 Flashcards

1
Q

What is a battery?

A

A device that converts chemical energy into electrical energy.

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

Name the two types of cells of a battery?

A

Primary Cells

Secondary Cells

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

What would the hydrometer reading be for a fully charged Lead Acid Battery?

A

1.275 - 1.300

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

During an installation of a battery into an aircraft, when should the negative terminal be connected?

A

After the positive

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

What is “deep cycling” or equalization of a battery?

A

Removes the memory of a nicad battery

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

What will a measured discharge test tell the mechanic?

A

State of Charge

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

How do you check the state of charge for a lead acid battery?

A

Measured Discharge Test

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

What happens to the electrolyte in a lead acid battery during discharge?

A

More susceptible to freezing

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

What is used to check specific gravity of a lead acid battery?

A

Hydrometer

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

How many volts per cell are in a NiCad Battery?

A

Between 1.55 & 1.80

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

How many volts per cell are in a lead acid battery?

A

2.1

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

What are two ratings found on aircraft battery?

A

Voltage & Amp Hour Capacity

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

What is used to neutralize a NiCad battery’s Electrolyte?

A

Baking Soda & Water

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

What is used to neutralize a lead acid battery’s electrolyte?

A

Bicarbonate / Baking Soda

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

If batteries are connected in parallel with each other, what increases?

A

AMPS

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

What three factors affect the capacitance of a capacitor?

A

The Size of the Conductor
The Size of the Gap Between Them
The Dielectric

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

What letter is used to represent capacitance?

A

C

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

How does a capacitor store electrical energy?

A

In the electric field between opposingly charged plates.

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

Transformers work off of what electrical principle?

A

Electromagnetic Induction

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

What happens to inductive reactance if frequency is increased?

A

Short Circuit

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

Inductance = ?

A

Lags

22
Q

Capacitance = ?

A

Leads

23
Q

How many cells does a 12-Volt lead acid battery have if the cells are connected in series?

A

6

24
Q

What is the number of cycles per second in an AC circuit called?

A

Frequency

25
Q

Inductance opposes the change in current by the generation of what?

A

Counter Electromotive Force

26
Q

If you measure the voltage at an AC house hold outlet on your multi-meter you’re reading what value?

A

Effective Value

27
Q

What is the power factor of a purely resistive AC circuit?

A

1

28
Q

What is the power factor of a purely inductive circuit?

A

0

29
Q

In an AC circuit the effective value for voltage is what?

A

Less than peak

30
Q

What 3 things must be present in order to have electromagnetic induction to occur in a generator?

A

Conductor, Magnetic Field, And Relative Motion between the two

31
Q

How many degrees out of phase are each phase in a 3-Phase generator?

A

120

32
Q

When you have different rated inductors connected in series, what would the total inductance be?

A

Equal to the sum of all inductors

33
Q

The opposition to the flow of alternating current caused by a coil is called what?

A

Inductive Reactance

34
Q

What frequency of alternating current is most commonly used on an aircraft?

A

400

35
Q

In an inductive circuit the current will either lead, lag, or equal the voltage?

A

Lags the Voltage

36
Q

What are not one of the two ways to connect a 3-phase generator?

a) TRIAC
b) Y
c) Delta

A

TRIAC is not a way

37
Q

What happens to current in a set up transformer with a ratio of 1:8

A

Current is reduced 8 times

38
Q

You have different rated capacitors connected in series what would your total capacitance be?

A

Less than the capacitance of the lowest rated capacitor

39
Q

What should the working voltage rating of the capacitor installed in an AC circuit be?

A

50% greater than the highest applied voltage

40
Q

In a capacitance circuit the current will either lead, lag or equal?

A

Lead

41
Q

What effect does increase either frequency or capacitance have on a capacitive reactance?

A

Inversely Proportionate

42
Q

What type of capacitors can be safely installed in an AC circuit?

A

Non-Electrolytic

43
Q

Self-Healing capacitors during closed and metal containers filled with what?

A

Oil Dielectric

44
Q

What is the formula of times constant with the capacitor circuit?

A

R*C

45
Q

What does a diode block in an AC circuit?

A

Current

46
Q

What does a rectifier convert in a circuit?

A

AC to DC

47
Q

The term forward bias means that the diode is what?

A

Conducting current flow

48
Q

When calculating power in a reactive or inductive AC circuit the true power is?

A

Less than apparent power

49
Q

When a reactive effects of a capacitor and an inductor are equal the circuit is said to be what?

A

Resonate

50
Q

What is the total opposition to the flow of current in an AC circuit?

A

Impedance

Electricity 2 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions