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EPRI Instrumentation – Questions With Solutions
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EPRI Instrumentation – Questions With Solutions
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EPRI Instrumentation – Questions With SolutionsInductance is measured in: ✔️Ans -Henreys
How many contacts does a DPDT relay have? ✔️Ans -4 or 2 sets
what is the best alternative to Grounding for portable tools? ✔️Ans
-double insulated
what steps should you take to prevent damaging a circuit board while
replacing it? ✔️Ans -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? ✔️Ans -2.35 ohms
what is the loop resistance for a circuit with 5 ohm, 7 ohm, and 12 ohm
resistor in series? ✔️Ans -24 ohms
How can a 4-20mA dc signal be read by a chart recorder that requires a 1-
5vdc input signal? ✔️Ans -Use a 250 ohm resistor in series
Which part of a valve provides the mechanical energy for stem travel?
✔️Ans -The Actruator
Which part of the valve becomes an integral part of the process piping?
✔️Ans -Valve body
A level transmitter is calibrated 0-150" H2O. the output is 9 mA. what is the
input? ✔️Ans -46.875" H20 or 31%
which part of the control loop is the signal conditioner? ✔️Ans -
transmitter
what type of meter is a coriolis meter? ✔️Ans -mass flow
give an example of a meter that use indirect measurement? ✔️Ans
-differential pressure, temperature, strain gauge
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