Two common pressure-sensing devices used in pressure controls are:
A) The bellows and the diaphragm. B) Strain gauge and expansion tube.
C) Capacitive transducer and thermistor. D) Sail switch and warp switch.
A
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For insulating a cylindrical vessel 14' in diameter with 3.5" thick block, how many lags per course will be required if the lag’s outer width is 4.5"?
a. 119 b. 121 c. 123 d. 125
Design a burglar alarm system using logic devices so if any one of three doors opens, a binary signal will trigger an alarm. Assume the doors are equipped with magnetic switches so a closed door switch provides a 0 signal to your circuit, and an open door provides a 1 signal to your circuit. Assume the alarm activates with a one-level signal.
What will be an ideal response?
An electric furnace that operates, but produces less heat than it used to produce. Which of the following could NOT be the cause?
A) An open fusible link B) An open strip heater C) A bad sequencer coil D) a bad transformer
Carry the answer to three decimal places. What is the total thickness of these shims taken from a bearing: 0.007 inch, 0.125 inch, 0.140 inch, 0.187 inch, and 0.004 inch?
Fill in the blank(s) with the appropriate word(s).