1.
An arc in welding is created by:
2.
The electrical discharge in an arc causes:
3.
Ionised gas in an arc enables:
5.
Except TIG, the arc also causes:
6.
Heat input to the fusion zone depends on:
7.
Welding in the PA (flat) position results in:
8.
Molten metal transfer rate in consumable electrodes depends on:
9.
For TIG welding, higher current allows:
10.
Arc energy is expressed in:
11.
Heat input is calculated as:
12.
Heat input is mainly influenced by:
13.
Vertical-up welding gives:
14.
Vertical-down welding gives:
15.
Overhead welding generally results in:
16.
SAW welding has potential for:
17.
. Typical heat input values for controlled welding are:
18.
Arc voltage is related to:
19.
Voltage setting affects:
20.
Increasing welding current generally:
21.
Penetration depth affects:
23.
MMA welding with DC+ve polarity provides:
26.
AC is used in TIG for:
28.
FCAW self-shielded wires:
30.
Open circuit voltage (OCV) for striking an arc is typically:
31.
Constant current power sources are preferred for:
32.
. In a constant current power source, welder controls:
33.
The drooping shape of volt-amp curves indicates:
34.
Small changes in arc voltage in CC source:
35.
Constant voltage power source is preferred for:
36.
In CV source, wire feed speed is:
37.
Momentary increase in welding current in CV source:
38.
If arc length increases in CV source:
39.
CC power sources are also known as:
40.
Arc energy formula includes:
41.
. Heat input units are:
42.
Travel speed affects:
43.
. Horizontal-vertical welding results in:
44.
. Flat position welding allows:
45.
Heat input for MAG example with 24V, 240A, 300mm/min:
46.
Heat input depends mainly on:
47.
For manual welding, control of fusion is ensured by:
48.
Constant voltage sources have:
49.
Arc voltage in CV source:
50.
Burn-off rate in CV source:
51.
Power source static characteristic is:
52.
. Higher current in TIG results in:
53.
. Arc energy is measured per:
55.
Electrode melting occurs in:
56.
. Manual welding prefers:
57.
Depth of fusion is mainly influenced by:
58.
Polarity for SAW to avoid arc blow is:
59.
Current setting in CC source is adjusted by:
60.
Manual TIG welding uses:
61.
Constant voltage power source is suitable for:
62.
Arc stability depends on:
63.
Droplet transfer across the arc in MIG/MAG is influenced by:
64.
Droplet transfer across the arc in MIG/MAG is influenced by:
65.
Heat input formula includes thermal efficiency factor:
66.
Welding current influences:
67.
Constant current power sources are sometimes called:
68.
··Arc energy formula:
69.
In CV source, arc length variations:
70.
Flat position welding is also called:
71.
Vertical-up welding requires:
72.
Horizontal-vertical welding limits:
73.
Travel speed affects weld bead by:
74.
SAW welding heat input is generally:
1 out of 1
