On a P&ID, a thin solid line indicates ____.
A. process piping
B. an instrument connected to a process
Answer: B
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Identify the sensor, signal conditioner and display elements of a measurement system such as mercury-in-glass thermometer. Identify the input and output parameters.
What will be an ideal response?
How much charge is stored in a 0.022 ?F capacitor that drops 22 V?
A) 0.0484 ?C B) 48.4 ?C C) 0.484 ?C D) 4.84 ?C
Which of these statements about double-clutching is true?
a. You can use the tachometer to tell you when to shift. b. Double-clutching should only be used with a heavy load. c. Double-clutching should not be used when the road is slippery. d. If you miss a gear while upshifting, you must bring the vehicle to a stop.
Refer to the actuator of Figure P18.16. The entire device is made of sheet steel. The coil has 2,000 turns. The armature is stationary so that the length of the air gaps, g = 10 mm, is fixed. A direct current passing through the coil produces a flux density of 1.2 T in the gaps. Assume ?r = 4,000 for sheet steel. Determine:
a. The coil current.
b. The energy stored in the air gaps.
c. The energy stored in the steel.
