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Evaporative cooling system cools the indoor air by lowering its dry bulb temperature:
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The Pitot – static tube measure which of the following:
Dew Point is the temperature to which air must be cooled under constant pressure to cause condensation to occur.
In _______, lower temperature can be offset with higher humidity
Which one is not a continuous control:
In which of the following system there is no reduction in the power consumption by the fan even though the load on the system has come down:
Evaporative cooling is the process by which air is subjected to a spray of recirculated water:
The aluminum fins are coated to ______ surface tension of the condensate water droplets:
The resistance of a material is _______ to the length of the material:
The Entholpy of air is the measure of heat content in _____ of air
Magnetic flow meters operate on which of the following principles:
Heat rejection factor of the plant varies with the:
Condensation occurs on surfaces ____ the dew point temperature:
Lesser is the resistance of RTD sensor element, lesser shall be the likelihood of error
Lower Aspect ratios can create turbulence:
Which of the valve is generally used to divert the flow:
While designing the cooling load calculations maximum outdoor summer temperature is considered:
The range of voltage which is caused by temperature differences at the junctions of thermocouple will be in range of:
As the temperature of the air increases, the amount of water vapor needed for the saturation _____:
In Cold water coil cooling system the discharge water is approximately _______ warmer than the supply water:
Direct Action means that the controller’s output increases as the sensor’s input decrease:
Which of the following sensor is non-contact and does not require immersion of any element into the sensed liquid.
The actual amount of water vapor that is contained in an air sample is expressed in:
Which of the following is a controlled variable in HVAC system:
The Capacitance value of the capacitor ____ with increase in the distance between the capacitor plates:
Which of the following actuator characteristics are important:
Platinum RTDs will have wide range of operating temperature:
Jet type of nozzles are used where the supply air from the diffuser has to travel a _____ distance to the occupied zone:
One way to reduce offset in P control is to reducing which of the following:
PI control loops do not perform well when setpoints are dynamic
