Welders And Filters B Flashcards

1
Q

Two factors that determine how well a choke filter output is

A

Inductance and current

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

2 factors that determine how well a capacitor filter output is

A

Resistance and capacitance

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

2 most important things about resistors?

A

Resistance and power

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

3 ratings of capacitors?

A

Capactitance
Tolerance
Voltage

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

Rating WVDC stand for?

A

Working voltage direct current

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

2 ratings of inductors?

A

Inductance
Current

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

Capacitor filter works best on small or large loads?

A

Small

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

Choke filter works best on small or large loads?

A

Large

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

Choke filter in series or parallel?

A

Series

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

2 types of resistors

A

Varible and fixed

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

H

A

H

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

Which capacitor is polarity sensitive?

A

Electrolytic

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

More loads added to the cap fileted cct would do what to %ripple?

A

Increase it.
Remember lower %ripple better

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

When choke filter is added to the filtered cct the %ripple would

A

Decrease
Better for %ripple

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

Ntype material has a net _________ charge?

A

Neutral

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

A 3phase full wave rec can be used with a 3 phase wire supply? T or F?

17
Q

How to charge the rate of a battery charger adjusted?

A

Adusting the voltage

18
Q

What current must the diode be rated for in a single phase dc welder

A

One half of the welder current

19
Q

What instance does a coil produce high voltage? Energized of not

A

When de-energized

20
Q

L-section effective or not

21
Q

L-section filter the capacitor is more effective as the load decreases? T or F

22
Q

Capacitor oppose what?

A

Change in voltage

23
Q

Formula for capacitance in series

A

CTn= 1
———————-
1/c + 1/c + 1/c

24
Q

Capacitance formula in parallel?

A

C1 + c2 + c3

25
3 types of inductors
Air Variable core Iron core
26
Inductance formula in series
L1 +L2 +L3
27
Inductance formula in parallel
1 ‐------------------------------ 1/l + 1/l 1/l
28
Inductance unit of measurement
Henry
29
Capacitance unit of measurement
Farad
30
3 most important ratings of capacitor
Cap Tolerance Voltage
31
2 most important ratings of a coil
Inductance Current
32
What is ripple
Variation in the magnitude of voltage
33
What does a filter do?
Smoth dc on output
34
How should a capacitor be connected to the rectifer to filter output
Parallel
35
How should a inductor be connected to a rectifer to filter
Series
36
Gmaw ac or dc
Dc
37
How is a capacitor filter connected?
Parallel with the output terminals
38
Rectifiers used in single phase welders
Full wave bridge Center tap
39
Capacitance of a series rv cct is increased. What happens to the charge time of the cap?
Will take longer