EPRI Instrumentation Exam Questions
and Answers
Inductance is measured in: - Answers -Henreys
How many contacts does a DPDT relay have? - Answers -4 or 2 sets
what is the best alternative to Grounding for portable tools? - Answers -double insulated
what steps should you take to prevent damaging a circuit board while replacing it? -
Answers -Wear an electrostatic discharge strap, don't touch the low voltage side, and
have the power off?
what is the loop resistance for a circuit with 5 ohm, 7 ohm, & 12 ohm resistor in parallel?
- Answers -2.35 ohms
what is the loop resistance for a circuit with 5 ohm, 7 ohm, and 12 ohm resistor in
series? - Answers -24 ohms
How can a 4-20mA dc signal be read by a chart recorder that requires a 1-5vdc input
signal? - Answers -Use a 250 ohm resistor in series
Which part of a valve provides the mechanical energy for stem travel? - Answers -The
Actruator
Which part of the valve becomes an integral part of the process piping? - Answers -
Valve body
A level transmitter is calibrated 0-150" H2O. the output is 9 mA. what is the input? -
Answers -46.875" H20 or 31%
which part of the control loop is the signal conditioner? - Answers -transmitter
what type of meter is a coriolis meter? - Answers -mass flow
give an example of a meter that use indirect measurement? - Answers -differential
pressure, temperature, strain gauge
and Answers
Inductance is measured in: - Answers -Henreys
How many contacts does a DPDT relay have? - Answers -4 or 2 sets
what is the best alternative to Grounding for portable tools? - Answers -double insulated
what steps should you take to prevent damaging a circuit board while replacing it? -
Answers -Wear an electrostatic discharge strap, don't touch the low voltage side, and
have the power off?
what is the loop resistance for a circuit with 5 ohm, 7 ohm, & 12 ohm resistor in parallel?
- Answers -2.35 ohms
what is the loop resistance for a circuit with 5 ohm, 7 ohm, and 12 ohm resistor in
series? - Answers -24 ohms
How can a 4-20mA dc signal be read by a chart recorder that requires a 1-5vdc input
signal? - Answers -Use a 250 ohm resistor in series
Which part of a valve provides the mechanical energy for stem travel? - Answers -The
Actruator
Which part of the valve becomes an integral part of the process piping? - Answers -
Valve body
A level transmitter is calibrated 0-150" H2O. the output is 9 mA. what is the input? -
Answers -46.875" H20 or 31%
which part of the control loop is the signal conditioner? - Answers -transmitter
what type of meter is a coriolis meter? - Answers -mass flow
give an example of a meter that use indirect measurement? - Answers -differential
pressure, temperature, strain gauge
