The dehumidification process, on the psychrometric chart, is shown by

Which of the following is/are the advantages of using a control chart for inspection? (i) A control chart indicates whether the process is in control or out of control. (ii) A control chart determines process variability. (iii) A control chart ensures product quality. (iv) Scrap or percentage reduction can be reduced by taking the necessary actions in time against the warnings indicated by control charts. (v) Control charts build up the reputation of the organization through customer’s satisfaction. (vi) The control chart can detect the unusual variations taking place in a process.

A

i, ii, iii only

B

i, iv, v only

C

i, ii, iii, iv, v and vi

D

iv, v and vi

Which of the following denotes dehumidification process on the psychrometric chart?

A

A horizontal line with an arrow towards the right

B

Vertical line with arrow upwards

C

A horizontal line with an arrow towards the right

D

Vertical line with arrow downwards

Four psychrometric processes P, Q, R and S are shown in the psychrometric chart below. These processes respectively represent

A

Dehumidification, Humidification, Sensible heating, Sensible cooling

B

Sensible heating, Humidification, Dehumidification, Sensible cooling

C

Dehumidification, Sensible heating, Sensible cooling, Humidification

D

Humidification, Sensible heating, Dehumidification, Sensible cooling

The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

A

(hA - h2)/ (h1 - h2)

B

(h2 - hA)/ (h1 - h2)

C

(h1 - h2)/ (hA - h2)

D

(hA - h1)/ (h2 - h1)

The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil and h_A = Enthalpy of air at the end of dehumidification process)

A

$$\frac{{{{\text{h}}_{\text{A}}} - {{\text{h}}_2}}}{{{{\text{h}}_1} - {{\text{h}}_2}}}$$

B

$$\frac{{{{\text{h}}_2} - {{\text{h}}_{\text{A}}}}}{{{{\text{h}}_1} - {{\text{h}}_2}}}$$

C

$$\frac{{{{\text{h}}_1} - {{\text{h}}_2}}}{{{{\text{h}}_{\text{A}}} - {{\text{h}}_2}}}$$

D

$$\frac{{{{\text{h}}_{\text{A}}} - {{\text{h}}_1}}}{{{{\text{h}}_2} - {{\text{h}}_1}}}$$

Which are the correct combinations for psychrometry processes a Activated Alumina I Heating & Humidification b Water injection II Heating & Dehumidification c Steam injection III Cooling & Dehumidification d Hygroscopic IV Cooling & Humidification

A

(a) - I (b) - II (c) - III (d) - IV

B

(a) - III (b) - IV (c) - I (d) - II

C

(a) - IV (b) - III (c) - II (d) - I

D

(a) - II (b) - IV (c) - I (d) - III

The humidification process, on the psychrometric chart is shown by

A

Horizontal line

B

Vertical line

C

Inclined line

D

Curved line

The humidity chart is formally known as the psychrometric chart. The statement is

A

True

B

False

C

Not defined well

D

None of the mentioned

Which of the following properties is not shown on psychrometric chart?

A

Dry bulb temperature

B

Wet bulb temperature

C

Dew point temperature

D

Partial vapour pressure

The air inside a space capsule is maintained at the required condition by passing it through a set of heat exchanger. The heat exchangers are designed such that the humid air passing through them is cooled and partial condensation of the water vapour occurs. On a psychrometric chart, this process appears as a line which is

A

Horizontal to the left

B

Vertical downwards

C

Diagonal downwards to the left

D

Diagonal upwards to the right

The dehumidification process, on the psychrometric chart, is shown by

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