Question 1

Which of the following is true of shielded metal arc welding?

Accepted Answer

A)   The machine and the electrodes are expensive.
B)   Metal as thin as 1/16 inch to several feet thick can be welded using the same machine.
C)   There is a lot of equipment required, and it is difficult to move.
D)   The process is not suitable for cast iron, aluminum, stainless steel or nickel.

Question 2

An electric current is the flow of ____________________.

Accepted Answer

The answer of An electric current is the flow of...

Question 3

____ controls the maximum gap the electrons can jump to form the arc.

Accepted Answer

A)   Voltage
B)   Amperage
C)   Heat
D)   Wattage

Question 4

The ____ machine allows the selection of different current settings by tapping into the secondary coil at a different turn value.

Accepted Answer

A)   inverter
B)   transformer
C)   multiple-coil
D)   movable-coil

Question 5

A transformer with more turns of wire in the primary winding than in the secondary winding is known as a ____.

Accepted Answer

A)   welding transformer
B)   low-amperage transformer
C)   step-down transformer
D)   high-voltage transformer

Question 6

Portable welders often have _____ or ______ plug outlets.

Accepted Answer

A)   110-volt, 220-volt
B)   110-volt, 120-volt
C)   12-volt DC, 24-volt DC
D)   12-volt AC, 24-volt AC

Question 7

A(n)  ____ produces AC, and a(n)  ____ produces DC.

Accepted Answer

A)   alternator, generator
B)   generator, alternator
C)   diode, alternator
D)   generator, diode

Question 8

Resistance to the flow of electrons produces ____.

Accepted Answer

A)   electricity
B)   voltage
C)   light
D)   heat

Question 9

Welding cables made of aluminum wire must be ____ would be required for copper.

Accepted Answer

A)   one size smaller than
B)   the same size as
C)   one size larger than
D)   two sizes larger than

Question 10

The major classifications of welding machines are ____.

Accepted Answer

A)   multiple core, inversion, transformer
B)   multiple inversion, transformer core, and step-down
C)   multiple coil, movable coil, movable core, and inverter
D)   magnetic core, movable coil, and transformer

Question 11

The terms welding cables and ____________________ mean the same thing.

Accepted Answer

The answer of The terms welding cables and ____________________ mean...

Question 12

A 60% duty cycle means that the machine can be used a total of ____ minutes out of every ten minutes at the maximum rated current.

Accepted Answer

A)   two
B)   six
C)   eight
D)   ten

Question 13

____ is a measurement of the amount of electrical energy or power in the arc.

Accepted Answer

A)   Voltage
B)   Amperage
C)   Heat
D)   Wattage

Question 14

Why is it important to keep portable welders properly tuned?

Accepted Answer

A)   To reduce air pollution
B)   So they run quieter
C)   To produce smoother welding current
D)   All of the above

Question 15

____________________ is a measure of electric pressure.

Accepted Answer

The answer of ____________________ is a measure of electric pressure....

Question 16

____________________ is the measurement of the amount of electrical energy or power in the arc.

Accepted Answer

The answer of ____________________ is the measurement of the amount...

Question 17

An advantage to ____________________ is higher current setting and longer times, which are helpful with E7018 electrodes.

Accepted Answer

The answer of An advantage to ____________________ is higher current...

Question 18

The amount of heat produced by a welding arc is determined by the ____.

Accepted Answer

A)   amperage
B)   wattage
C)   voltage
D)   capacitance

Question 19

In a(n) ____________________ welding machine the incoming power is changed from 60 cycles per second to several thousand cycles per second.

Accepted Answer

The answer of In a(n) ____________________ welding machine the incoming...

Question 20

In a standard welding transformer, the size of the iron core is determined by ____.

Accepted Answer

A)   the distance between the coils
B)   the length of time it takes for the magnetic field to build up and collapse
C)   the desired thickness of the weld bead
D)   the speed of the rotor

Exam 3: Shielded Metal Arc Equipment, Setup, and Operation

____________________ is the measurement of the amount of electrical energy or power in the arc.

Correct AnswerverifiedShow Answer

____________________ is a measure of electric pressure.

Correct AnswerverifiedShow Answer

Resistance to the flow of electrons produces ____.

Correct AnswerverifiedShow Answer

A(n) ____ produces AC, and a(n) ____ produces DC.

Correct AnswerverifiedShow Answer

The major classifications of welding machines are ____.

Correct AnswerverifiedShow Answer

Why is it important to keep portable welders properly tuned?

Correct AnswerverifiedShow Answer

____ controls the maximum gap the electrons can jump to form the arc.

Correct AnswerverifiedShow Answer

An advantage to ____________________ is higher current setting and longer times, which are helpful with E7018 electrodes.

Correct AnswerverifiedShow Answer

The terms welding cables and ____________________ mean the same thing.

Correct AnswerverifiedShow Answer

In a(n) ____________________ welding machine the incoming power is changed from 60 cycles per second to several thousand cycles per second.

Correct AnswerverifiedShow Answer

An electric current is the flow of ____________________.

Correct AnswerverifiedShow Answer

Which of the following is true of shielded metal arc welding?

Correct AnswerverifiedShow Answer

____ is a measurement of the amount of electrical energy or power in the arc.

Correct AnswerverifiedShow Answer

Portable welders often have _____ or ______ plug outlets.

Correct AnswerverifiedShow Answer

In a standard welding transformer, the size of the iron core is determined by ____.

Correct AnswerverifiedShow Answer

A transformer with more turns of wire in the primary winding than in the secondary winding is known as a ____.

Correct AnswerverifiedShow Answer

A 60% duty cycle means that the machine can be used a total of ____ minutes out of every ten minutes at the maximum rated current.

Correct AnswerverifiedShow Answer

The amount of heat produced by a welding arc is determined by the ____.

Correct AnswerverifiedShow Answer

Welding cables made of aluminum wire must be ____ would be required for copper.

Correct AnswerverifiedShow Answer

The ____ machine allows the selection of different current settings by tapping into the secondary coil at a different turn value.

Correct AnswerverifiedShow Answer

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A(n) produces AC, and a(n) produces DC.

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Portable welders often have _ or __ plug outlets.

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