COLING LOAD CALCULATIONS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

COOLING LOAD CALCULATIONS

MULTIPLE CHOICE QUESTIONS (MCQ)

WITH ANSWERS

MCQ increases level of clarity and

understanding. Cooling load calculations

means finding the capacity of the cooling

plant for a particular application. Cooling

loads consist of sensible and latent heat

load contributed by different sources.

Inside and outside design conditions

along with cooling loads help in the

design of air conditioning equipment.

 

Fig. Cooling Load Calculations
  1. Meaning of cooling load calculations is to find the
    1. Heating capacity of the A/C plant
    2. Cooling capacity of the A/C plant
    3. Both (a) & (b)
    4. None
ANS: (c )
  1. Cooling load calculations include
    1. sensible heat loads
    2. Latent heat loads
    3. Both (a) & (b)
    4. None
ANS: (c )
  1. Sensible heat load is contributed by
    1. 6 sources
    2. 8 sources
    3. 10 sources
    4. None
ANS: (b)
  1. Latent heat is contributed by
    1. 5 sources
    2. 7 sources
    3. 9 sources
    4. None
ANS: (a)
  1. Sensible heat load through a wall is given by
    1. kA dt wall
    2. h A dt wall
    3. UA dt wall
    4. None
ANS: (c )
  1. Sensible heat load through glass is given by
    1. kA dt glass
    2. h A dt glass
    3. U A dt glass
    4. None
ANS: (a)
  1. Sensible heat load contributed by infiltration is
(a ) m. c p (to—ti)
(b) m. C v(to—ti)
(c) (c p +cv) (to—ti)
(d) None
ANS: (a)
  1. Sensible heat load contributed by additional infiltration is
(a ) m. c p (to—t i)
(b) m. C v(to—t i)
© m.(c p +c v) (to—t i)
(d)None
ANS: (a)
  1. Sensible heat load contributed by occupants is
    1. 240 kJ/h/person
    2. 160 kJ/h/person
    3. 400 kJ/h/person
    4. None
ANS: (b)
  1. Sensible heat load contributed by products being cooled is
    1. m c p (t–t freeing) +m c p(t final-t freezing)
    2. m Latent heat of products
    3. Both (a) & (b)
    4. None
ANS: (c )
  1. Sensible heat load contributed by miscellaneous factors is
    1. 30 %
    2. 20%
    3. 10%
    4. None
ANS: (c )
  1. Sensible heat load contributed by ventilation for 10 air changes per hour is
    1. ρ 10 V room C v (to—ti)
    2. ρ 10 Vroom Cp (to—ti)
    3. Both (a) & (b)
    4. None
ANS: (b)
  1. Latent heat load through a wall is given by
    1. kA Latent heat
    2. h A Latent heat
    3. UA Latent heat
    4. None
ANS: (d)
  1. Latent heat load through glass is given by
    1. kA Latent heat
    2. h A Latent heat
    3. UA Latent heat
    4. None
ANS: (d)
  1. Latent heat load contributed by infiltration is
(a)m. c p Latent heat of moisture
(b)m. C v Latent heat of moisture
©m. Latent heat of moisture
(d)None
ANS: (c)
  1. Latent heat load contributed by additional infiltration is
(a ) m. c p (to—ti)
(b)m. C v(to—ti)
© m.(c p +cv) (to—ti)
(d)None
ANS: (d)
  1. Latent heat load contributed by occupants is
(a)240 kJ/h/person
(b)160 kJ/h/person
©400 kJ/h/person
(d)None
ANS: (a)
  1. Latent heat load contributed by products being cooled is
    (a) m c p (t–t freeing) +m c p(t final-t freezing)
         (b)m Latent heat of products
         ©Both (a) & (b)
         (d)None
          ANS: (b )
  1. Latent heat load contributed by miscellaneous factors is
    1. 30 %
    2. 20%
    3. 10%
    4. None
ANS: (c )
  1. Latent heat load contributed by ventilation for 10 air changes per hour is
    1. ρ 10 Vroom C v (to—t i)
    2. ρ 10 Vroom Cp (to—t i)
    3. Both (a) & (b)
    4. None
ANS: (d)
  1. Sensible heat factor (SHF) is the ratio of
  1. Sensible heat load/Latent heat load
  2. Latent heat load/Sensible heat load
  3. Sensible heat load/ (SHL +LHL)
  4. None
ANS: (c )
  1. Room sensible heat factor is
  1. RSHL/RLHL
  2. RLHL/(RSHL+RLHL)
  3. RSHL/(RSHL+RLHL)
  4. None
ANS: (c )
  1. Grand sensible heat factor is
  1. GSHL/(GSHL+GLHL)
  2. GSHL/GLHL
  3. Both (a) & (b)
  4. None
ANS: (a)
  1. GSHL is
  1. RSHL+RLHL
  2. TRHL+TVHL
  3. TVSHL+TVLHL
  4. None
ANS: (b)
  1. Inside design conditions are
  1. Constant
  2. Variable
  3. Can’t say
  4. None
ANS: (a)
  1. Outside design conditions are
  1. Constant
  2. Variable
  3. Can’t say
  4. None
ANS: (b)
  1. Which heat load is more in the rainy season?
  1. SHL
  2. LHL
  3. Both (a) & (b)
  4. None
ANS: (b)
https://mesubjects.net/wp-admin/post.php?post=3335&action=edit                     Q. ANS. Cooling Loads
https://mesubjects.net/wp-admin/post.php?post=6047&action=edit            THEORY Cooling load calculations
https://www.mesubjects.net/wp-admin/post.php?post=6052&action=edit       SHF