Have you just finished the CDC 3E151B course on Heating, Ventilation, And Refrigeration? What is a better way there to see how attentive you are than showing off how much you learned? Take up this quiz and review what you learned. Be sure to post your score to see how you fair among others. All the best of luck!
Energy is made up of atoms, which consists of electrons kept in motion by matter, which is a form of heat
Heat is made up of molecules, which consists of electrons kept in motion by energy, which is a form of matter
Matter is made of atoms, which consists of electrons kept by heat, which is a form of energy
Energy is made up of molecules, which consists of electrons kept in motion by heat, which is a form of matter
Rate this question:
Similar to that of light waves and radio waves
By the movement of a fluid such as air or water over a substance
Where a fan is used to propel the air across a hot or cold surface
Through a substance or from one body to another when the bodies are in direct contact
Rate this question:
Conduction
Convection
Radiation
Radiant
Rate this question:
Drop in temperature of that substance
Change in physical state of the substance
Stable temperature of that substance
Rise in temperature of that substance
Rate this question:
Latent heat of vaporization
Latent heat of condensation
Sensible heat of vaporization
Sensible heat of condensation
Rate this question:
F = (C x 1.8) + 32
F = (C x 1.8) - 32
C = (F - 32) / 1.8
C = (F + 32) / 1.8
Rate this question:
13.33 cubic feet
0.016 cubic feet
29.92 inches mercury
62.4 pounds/cubic foot
Rate this question:
11 psi
14.7 psi
110 psi
340 psi
Rate this question:
Along the walls
At the top
At the bottom
In the center
Rate this question:
With more heat added
At a temperature below boiling water
At a temperature above boiling water
At the temperature of boiling water
Rate this question:
Grains of moisture and specific heat
Dewpoint and wet-bulb temperatures
Wet-bulb and dry-bulb temperatures
Dry-bulb and dewpoint temperatures
Rate this question:
Relative humidity line
Dew point line
Dry-bulb line
Wet-bulb line
Rate this question:
57 percent
61 percent
65 percent
70 percent
Rate this question:
Latent heat process
Sensible heat process
Moisture injection process
Adiabatic saturation process
Rate this question:
Pneumatic
Electronic
Self-contained
Electromechanical
Rate this question:
Open
Closed
Combination
Reverse reset
Rate this question:
Static pressure in a variable air volume system
Controlling temperature in a laboratory
Hot water reset from outdoor air
Room and discharge
Rate this question:
Proportional-plus-integral
Proportional-with-reset
Proportional
Floating
Rate this question:
3.52 psi
5.88 psi
9.20 psi
11.60 psi
Rate this question:
3.0 psi
8.6 psi
9.4 psi
10.2 psi
Rate this question:
5 percent
10 percent
15 percent
20 percent
Rate this question:
3 psi
8 psi
10 psi
13 psi
Rate this question:
Find the transmitting pressure for both corners and the set point
Use a simulator in place of both sensors
Set the proportional
Adjust the controller P cal
Rate this question:
Adjust the calibration screw to equal the predicted output pressure
Adjust the sensors to the predicted output pressures
Disconnect the sensor simulators
Readjust the the proportional band
Rate this question:
The dials must all be set to the specified values
The temperature must be measured at the sensor
A temperature simulator cannot be used in calibration
You must allow extra time for the system to stabilize
Rate this question:
Set point dial up by one-half the TRc
Sensitivity slides
Calibration screw
Pressure span
Rate this question:
Desired variable
Reset variable
Set point
Offset
Rate this question:
Counter
Straight
Direct
Reverse
Rate this question:
Action
Proportional band
Percent authority
Output pressure to equal calibration pressure (Pcal)
Rate this question:
Draw performance graph
Find the sensor pressures
Disconnect both sensors and connect the simulator
Measure the output pressure
Rate this question:
Stabilizes
Decreases
Increases
Stays the same
Rate this question:
Allow the system time to stabilize; then calibrate
Disconnect the control point adjustment pressure and calibrate the controller
Adjust the control point adjustment to maximum pressure; then, use the dual-input calibration procedures
Return the control point adjustment port to the calibration pressure; then, use the single-input calibration procedures
Rate this question:
6 percent
12 percent
24 percent
48 persent
Rate this question:
It will not allow output pressure to fall below a preset value
It selects both the high and low signal
It changes the signal from direct-acting to reverse-acting
It will not allow the output pressure to go above a preset value
Rate this question:
Actuator
Switching relay
Square root extractor
Minimum position switch
Rate this question:
The pressure range over which a high/low selector operates
The pressure range over which a program switch operates
The pressure range over which a actuator operates
The pressure range of a controller's internal parameters
Rate this question:
Close to the equipment it is controlling
On a steady base away from vibration
On the side of an air handler
Close to main air supply
Rate this question:
Sensor
Controller
Adapter
Controlled device
Rate this question:
Calibrate the instruments
Use a degreasing compound
Stop the contamination at the source
Retrofit the compressor air supply equipment
Rate this question:
Turn on the fans
Calibrate the controller
Change the filters in the controller
Flush the system with a clean air supply
Rate this question:
Double pole, double throw and double pole, single throw
Single pole, double throw and single pole, single throw
Snap acting and mercury switch
Thermostatic and mercury
Rate this question:
The final control elements moves to a position equal to the amount the controlled variable moved
The controller never catches up with the controlled condition
It greatly reduces the swings in the controlled variable
The thermal timer will cool
Rate this question:
Offset
Sensitivity
The throttling range
The position of the final element
Rate this question:
40
60
80
90
Rate this question:
A line voltage circuit
A fail-safe control circuit
Used mainly where hazardous conditions exist
Unusable when single-pole,double throw control of line voltage is required
Rate this question:
Operate clockwise
Close the face dampers
Open the face dampers
Open the chilled water
Rate this question:
Face and bypass dampers
Reheat value
Temperature
Steam coil
Rate this question:
Ammeter
Voltmeter
Ohmmeter
Anemometer
Rate this question:
Quiz Review Timeline (Updated): Mar 20, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
Wait!
Here's an interesting quiz for you.