# TUNE YOUR LOOP: Mathematics for Instrumentation Technicians

TUNE YOUR LOOP: Questions to keep you sharp.

Tune Your Loop is a series of posts consisting of questions from ISA Training Courses.

1. What is the temperature expressed in Celsius if the Fahrenheit temperature is –
40°?

1. -46.4°
2. – 40°
3. – 9.8°
4. + 40°

2. If the input signal of a properly calibrated I/P is 7mA what is the standard output
signal?

1. 5.25PSI
2. 2.25PSI
3. 4.20PSI
4. 6.56 PSI

3. In a series circuit all resistance is added. What is the total resistance in the
circuit if the current is 1 mAmp and voltage is 10VDC? (E=IR)

1. 10Ω
2. 100Ω
3. 10KΩ
4. .10KΩ

4. Using the vector formula there are two forces at 90 degrees to each other being
applied to an object. One force is represented by a line 20 inches long while the
other forces is represented by a line 10 inches long, what is the length, in inches,
of the line representing the resultant force?

1. 30.00
2. 14.14
3. 22.36
4. 7.07

1. b

2. a

3. c

4. c

From the ISA Course Mathematics for Instrumentation Technicians (FG02) pre-instructional survey.

• siddu

first quest….ans is none of the above….

• NickM

-40F is -40C, the unfortunate wrapping of text may cause confusion about the question

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