A __________ -type level device is used to measure a liquid-liquid interface tank.
A. float
B. displacement
C. purge
Answer: B
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Most HVAC systems will default to ________ if there is a failure in the control part of the system.
A) Full cold A/C B) Defrost C) A/C only D) Floor heat
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If an object is at rest and there are no unbalanced forces acting on it, the object will
a. speed up. b. slow down. c. remain at rest. d. none of the above
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If you were to measure the amount of current flowing in a circuit, you would use a(n) ____.
A. voltmeter B. ammeter C. ohmmeter D. oscilloscope
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Write state equations for the circuit of Figure E.2 with the inductor current 
and capacitor voltage 
as the state variables and the current at the input 
excitation and the voltage at the output 
as the response.
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