Welders And Filters B

Question 1

Two factors that determine how well a choke filter output is

Answer 1

Inductance and current

Question 2

2 factors that determine how well a capacitor filter output is

Answer 2

Resistance and capacitance

Question 3

2 most important things about resistors?

Answer 3

Resistance and power

Question 4

3 ratings of capacitors?

Answer 4

Capactitance
Tolerance
Voltage

Question 5

Rating WVDC stand for?

Answer 5

Working voltage direct current

Question 6

2 ratings of inductors?

Answer 6

Inductance
Current

Question 7

Capacitor filter works best on small or large loads?

Answer 7

Small

Question 8

Choke filter works best on small or large loads?

Answer 8

Large

Question 9

Choke filter in series or parallel?

Answer 9

Series

Question 10

2 types of resistors

Answer 10

Varible and fixed

Question 11

H

Answer 11

H

Question 12

Which capacitor is polarity sensitive?

Answer 12

Electrolytic

Question 13

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

Answer 13

Increase it.
Remember lower %ripple better

Question 14

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

Answer 14

Decrease
Better for %ripple

Question 15

Ntype material has a net _________ charge?

Answer 15

Neutral

Question 16

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

Answer 16

True

Question 17

How to charge the rate of a battery charger adjusted?

Answer 17

Adusting the voltage

Question 18

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

Answer 18

One half of the welder current

Question 19

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

Answer 19

When de-energized

Question 20

L-section effective or not

Answer 20

Effective

Question 21

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

Answer 21

True

Question 22

Capacitor oppose what?

Answer 22

Change in voltage

Question 23

Formula for capacitance in series

Answer 23

CTn= 1
———————-
1/c + 1/c + 1/c

Question 24

Capacitance formula in parallel?

Answer 24

C1 + c2 + c3

Question 25

3 types of inductors

Answer 25

Air
Variable core
Iron core

Question 26

Inductance formula in series

Answer 26

L1 +L2 +L3

Question 27

Inductance formula in parallel

Answer 27

1
‐——————————
1/l + 1/l 1/l

Question 28

Inductance unit of measurement

Answer 28

Henry

Question 29

Capacitance unit of measurement

Answer 29

Farad

Question 30

3 most important ratings of capacitor

Answer 30

Cap
Tolerance
Voltage

Question 31

2 most important ratings of a coil

Answer 31

Inductance
Current

Question 32

What is ripple

Answer 32

Variation in the magnitude of voltage

Question 33

What does a filter do?

Answer 33

Smoth dc on output

Question 34

How should a capacitor be connected to the rectifer to filter output

Answer 34

Parallel

Question 35

How should a inductor be connected to a rectifer to filter

Answer 35

Series

Question 36

Gmaw ac or dc

Answer 36

Dc

Question 37

How is a capacitor filter connected?

Answer 37

Parallel with the output terminals

Question 38

Rectifiers used in single phase welders

Answer 38

Full wave bridge
Center tap

Question 39

Capacitance of a series rv cct is increased. What happens to the charge time of the cap?

Answer 39

Will take longer