This is intended as a tool to check your confidence. If you need to call for the answers, come to the preparation class.

EPRI Pre-test

1. How much power is delivered to a 450 ohm circuit by a 24 volt battery?

A. 5.12 w

B. 20.0 w

C. 10.24 w

D. 1.28 w

A. 0.0

B. 32.0

C. -17.78

D. -24.6

 3. How does OSHA suggest the worker should deal with the potential of working on live or energized equipment?

A. Ask someone nearby what the status of the equipment is

B. Inspect and test all equipment, assuming all to be energized until proven to be de-energized

C. Work only on equipment which is tagged " dead "

D. Work only on equipment your supervisor says is " dead "

4. A resistor has a silver tolerance band, it has a tolerance of:

A. +/- 20%

B. +/- 10%

C. +/- 5%

D. +/- 1%

5. A pressure transmitter with a range of 0 to 100 PSIG, has a manufacturer's accuracy specification of 0.5%.                                                 During a calibration test, an actual pressure of 50 PSIG reads 52 PSIG. How far out of specification is this                                                     transmitter.

A. 0.5 psig

B. 1.0 psig

C. 1.5 psig

D. 2.0 psig

6. Height times density is part of the equation for

A. pressure

B. volume

C. force

D. specific gravity

7. A pressure transmitter has a range of -0.5 to +0.5 inches of water; its span is?

A. 0.5

B. -0.5

C. 1.0

D. 1.5

8. At STP, process conditions are 20 inches HgV. What is the absolute pressure of this process?

A. 5.92 psia

B. 2.90 psig

C. 49.9 inches HgA

D. 4.92 psia

9. The output of an electronic level transmitter reads 54%. If the output signal is standard madc, what will the mA reading be?

A. 7.36mA

B. 12.64mA

C. 13.2mA

D. 8.64mA

10. A rectangular tank measures 5 ft X 5 ft X 5 ft high. What is its volume?

A. 25 cu. ft

B. 125 cu. ft.

C. 125 sq. ft

D. 125 ft

11. A cylindrical vessel filled with water measures 40 ft high and has a diameter of 10 ft. A pressure gage installed halfway up the vessel would read_______?

A. 4.33 psia

B. 10.66 psia

C. 8.66 psig

D. 17.33 psi

12. What is the total force on the bottom of a vessel 10 ft tall, 4 ft in diameter and filled with water?

A. 1176 #

B. 7841 #

C. 624 #

D. 749 #

13. A level transmitter with a 4-20mA output, is calibrated to a range of 0-200 inches of water. What is the tank level, in inches, when the transmitter output is 17mA?

A. 170.0

B. 162.5

C. 150.0

D. 130.5

14. Type J thermocouple wire leads are:

A. red and white

B. red and blue

C. crimson and gray

D. yellow and red

15. A temperature sensing device whose resistance increases with increasing temperature is a:

A. variable resistor

B. thermocouple

C. RTD

D. thermister

16. 100 degrees Fahrenheit is_________degrees Celsius.

A. 63.2

B. 37.8

C. 212.0

D. 32.0

17. On a temperature transmitter with an input range of 20-100 F and an output of 4-20mA, what is the input value if the output reads 10mA?

A. 30.0 F

B. 44.0 F

C. 70.0 F

D. 50.0 F

18. If a temperature switch has a setpoint of 200 F on increasing temperature and the switch resets at 150 F on decreasing temperature, the 50 degree difference would be called the______?

A. negative temperature coefficient

B. deadtime

C. deadband

D. offset

19. Which of these types of orifice plates is best suited to measure the flow of non-homogenous liquids containing solids?

A. vented

B. segmental

C. concentric

D. eccentric

20. If a transmitter has an input range of 0-200 inches of water and an output of 10-50 mAdc, what is the predicted output for an input of 30 inches of water?

A. 22 mAdc

B. 12 mAdc

C. 16 mAdc

D. 28 mAdc

21. Twelve inches of water column equals _______psig.

A. .0361

B. .361

C. .433

D. 3.61

22. What is the buffer solution to check a 50% signal reading of a PH sensor instrument?

A. #4

B. #10

C. #7

D. #14

23. What is a neutral buffer solution?

A. #2

B. #7

C. #9

D. #12