Review Questions - Metric and Imperial Measurement

Question 1

What unit of measurement is used to define thw diameter of a tungsten electrode?

1. millimeters
2. centimeters
3. meters
4. kilometers

Answer 1

millimeters

Question 2

The measured wire feed speed of a GMAW procedure is 400 in/min. What is the approximate wire feed in metric units?

1. 40.2 mm/s
2. 39.4 mm/s
3. 169.3 mm/s
4. 286.7 mm/s

Answer 2

169.3 mm/s

Question 3

A length of pipe twenty feet long is how long in centimeters?

1. 244.4 cm
2. 508.2 cm
3. 609.6 cm
4. 897.7 cm

Answer 3

609.6 cm

Question 4

the imperial measuremnet for large distances is miles. What is the metric unit of long distance measurment?

1. millimetre
2. centimetre
3. picometre
4. kilometre

Answer 4

kilometre

Question 5

A pipe hanger drawing calls for four pieces of angle iron, each being 38” 16”, 27” and 8” long. How many feet and inches of angle iron are needed to build the hanger?

1. 3’-8”
2. 5’-17”
3. 7’-5”
4. 9’-11”

Answer 5

7’-5”

Question 6

A vessel’s inside diameter is 8 ft and its inside length is 12 ft. If the tank has flat ends, how many gallons of water are needed to fill the tank for pressure testing? (7.481 gal/Ft³)

1. 140.6 gal
2. 280.9 gal
3. 603.2 gal
4. 4512.4 gal

πr²

Answer 6

4512.4 gal

πr² ( 3.1416x16x12x7.481)

Question 7

What is the area of a right-angled triagle 60cm high with a base of 30 cm?

1. 180 cm²
2. 240 cm²
3. 600 cm²
4. 900 cm²

Answer 7

900 cm²

60 cm x 30 cm = 1800 / 2

Question 8

if an electrode storage oven is to be kept at a temperature of 120 °C, but the control is in imperial, what temperature setting is correct?

1. 50 °F
2. 120 °F
3. 250 °F
4. 350 °F

(9/5C +32)

Answer 8

250 °F

Question 9

A load of 25 stel bars is delivered to a work site from a fabrication shop. the square bars are 6” x 3/4” x 20”. How much does the load weigh? (0.283 ibs/in³)

1. 636.75 lbs
2. 576.23 lbs
3. 486.98 lbs
4. 376.99 lbs

Answer 9

636.75 lbs

6 x .75 x 20 x 25 x 0.283