Test questions

Question 1

1 Feet H20 is how many psi?

Answer 1

0.433 psi

Question 2

1 psi is how many feet of H2O?

Answer 2

2.31 ft H2O

Question 3

What value is atmospheric pressure?

Answer 3

14.7 psia

Question 4

1 cubic feet of water is how many lbs?

Answer 4

62.4 lbs

Question 5

1 gallon of water is how many lbs?

Answer 5

8.36 lbs

Question 6

What is Boyle’s Law and what is the formula?

Answer 6

The pressure of a gas increases as the volume decreases
Formula:
P1 X V1 = P2 X V2

Question 7

A device that converts Direct Current to Alternating Current is called a what?

Answer 7

Inverter

Question 8

Reynold number is associated with what?

Answer 8

Laminar flow
Flow < 2000

Transition
Anything in between 2000 thru 4000

Turbulent flow
Flow > 4000

Question 9

Personnel oxygen depletion alarms are typically set for?

Answer 9

19.5%

Question 10

What is the formula to calculate watts?

Answer 10

P = I V
Power = Current x Voltage

Question 11

Which flow meter type has the best accuracy?

Answer 11

Coriolis

Question 12

The absolute pressure scale references its zero pressure point to what?

Answer 12

A perfect vacuum

Question 13

Archimedes principle is used in which type of process?

Answer 13

Level

Question 14

How do you convert degrees F to C?

Answer 14

( F - 32 ) / 1.8

Question 15

How do you convert degrees C to F?

Answer 15

( C X 1.8 ) + 32

Question 16

What is the formula for volumetric flow?

Answer 16

Formula
Q= v A
Q	= 	volumetric flow rate
v	= 	flow velocity v
A	= 	cross-sectional vector area

Cross-sectional formula :
A = 3.14 (r²)

Question 17

What are the gases monitored on a 4 gas personnel gas monitor?

Answer 17

Oxygen O2
Lower Explosive Limit LEL
Carbon monoxide CO
Hydrogen Sulfide H2S

Question 18

Pressure regulators should be set for _____ psi above the Output Upper range value of a pneumatic transmitter?

Answer 18

5 psi

Question 19

How do you convert Process Variable to mA output?

Answer 19

instrument reading - LRV
(___________________ ) 16 + 4 = Milliamp output
Instrument span

Question 20

How to convert 4-20 mA output to Process variable?

Answer 20

Output mA - 4
___________ (span) + LRV = Process variable
16

Question 21

How do you convert process variable to pneumatic output?

Answer 21

instrument reading - LRV
(___________________ ) 12 + 3 = Pneumatic output
Instrument span

Question 22

How to convert pneumatic reading to process variable?

Answer 22

(Pneumatic output - 3)
_________________ (span) + LRV = Process variable
12

Question 23

Percent of full range D/P to Square root mA?

Answer 23

√ Measured D/P
___________ x 16 mA + 4 mA = Square root mA output
Maximum D/P

Question 24

What is turndown?

Answer 24

Ratio of the maximum flow that flowmeter can measure to the minimum flow that can be measured

Question 25

How do you calculate specific gravity of a fluid compared to water?

Answer 25

Fluid density / 62.4 ( water density 1 cubic ft)

Question 26

0 C and 100 C is equivalent to what in F?

Answer 26

32 F 212 F