Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 - ObjectiveBooks

Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07

Practice Test: Question Set - 07


1. Freon group of refrigerants are
    (A) Inflammable
    (B) Toxic
    (C) Non-inflammable and toxic
    (D) Nontoxic and non-inflammable

2. The boiling point of ammonia is
    (A) -10.5°C
    (B) -30°C
    (C) -33.3°C
    (D) -77.7°C

3. For obtaining high COP, the pressure range of compressor should be
    (A) High
    (B) Low
    (C) Optimum
    (D) Any value

4. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be
    (A) 1.33
    (B) 2.33
    (C) 3.33
    (D) 4.33

5. Cooling water is required for following equipment in ammonia absorption plant
    (A) Condenser
    (B) Evaporator
    (C) Absorber
    (D) Condenser, absorber and separator (rectifier)

6. The freezing point of sulphur dioxide is
    (A) -56.6°C
    (B) -75.2°C
    (C) -77.7°C
    (D) -135.8°C

7. Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of
    (A) 1: 1
    (B) 1: 9
    (C) 9: 1
    (D) 1: 3

8. In a refrigeration system, the expansion device is connected between the
    (A) Compressor and condenser
    (B) Condenser and receiver
    (C) Receiver and evaporator
    (D) Evaporator and compressor

9. The vapour compression refrigerator employs the following cycle
    (A) Rankine
    (B) Carnot
    (C) Reversed Rankine
    (D) Reversed Carnot

10. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about
    (A) 1
    (B) 1.25
    (C) 2.15
    (D) 5.12

11. Rating of a domestic refrigerator is of the order of
    (A) 0.1 ton
    (B) 5 tons
    (C) 10 tons
    (D) 40 tons

12. A human body feels comfortable when the heat produced by the metabolism of human body is equal to the
    (A) Heat dissipated to the surroundings
    (B) Heat stored in the human body
    (C) Sum of (A) and (B)
    (D) Difference of (A) and (B)

13. The bank of tubes at the back of domestic refrigerator is
    (A) Condenser tubes
    (B) Evaporator tubes
    (C) Refrigerant cooling tubes
    (D) Capillary tubes

14. In a lithium bromide absorption refrigeration system
    (A) Lithium bromide is used as a refrigerant and water as an absorbent
    (B) Water is used as a refrigerant and lithium bromide as an absorbent
    (C) Ammonia is used as a refrigerant and lithium bromide as an absorbent
    (D) None of the above

15. The condition of refrigerant after passing through the condenser in a vapour compression system is
    (A) Saturated liquid
    (B) Wet vapour
    (C) Dry saturated vapour
    (D) Superheated vapour

Show and hide multiple DIV using JavaScript View All Answers


    Blogger Comment
    Facebook Comment

48 blogger:

  1. Very very good sir .so thanks sir

    ReplyDelete
  2. This practice tests are very helpfull and it will be more convenient if you add explanations for respective answers :)

    ReplyDelete
  3. Can have you pdf this set
    Please share me

    ReplyDelete
    Replies
    1. Hi KUMUD RANJAN

      You can save all the questions answers set as pdf format, just go to print the page option and save it as pdf

      Delete
  4. Replies
    1. Hi SANDEEP KUSHWAHA

      All the questions are here in set wise. Total 20 sets of questions and answers. Please see bellow the posts, the link is there.

      Delete
  5. Thanks, it good for me to teach my student

    ReplyDelete
    Replies
    1. I am glad to hear you. Thank you for visiting & liking objectivebooks.com

      Delete
  6. thank you sir... it would be nice if there have discussion page for each question as indiabix.com .... we are waiting for such improvement... keep up

    ReplyDelete
  7. Thanks sir RAC ke liye question babne ke liye bahut hi problem hai es trade ke stdent ke liye aap ne to hamahri jindgi badi di sir aap bas hindi me v question bana diniye sir GGG

    ReplyDelete
  8. sir ji all set ka pls pdf provide kar de with ans

    ReplyDelete
  9. Ac ka bhi kuch qus bejh do

    ReplyDelete
  10. Sir mera cits ka exm.h R&Ac trad kya mujko pta lgega kase qus Aate h cits ke exm me plzz sir help me..

    ReplyDelete
    Replies
    1. I will try to upload CITS Exam question paper soon, this week.

      Delete
  11. Sir 'iTi' ke rac tred ke liye koi model question paper ka set aata hai kya agar aata hai to mujhe bhej sakte hain kya 2019 ke liye

    ReplyDelete
  12. Very informative blog, thanks for sharing. R134a

    ReplyDelete
  13. To decrease the quantity of issues that may emerge, it is a decent proposal as air conditioning repair to routinely check the support of your air conditioner. heating repair patterson ny

    ReplyDelete
  14. Air Conditioner Rental organizations bargain in a wide range of air conditioners, for example, window, split, focal, compact, mechanical, and then some.aircon servicing

    ReplyDelete
  15. Inaccurate airflow issues are another basic issue with ill-advised AC establishments. In fact, fitting air conditioner establishment is one of the four components expected to keep up a practical, productive and open to cooling framework.heating repair south salem

    ReplyDelete
  16. Many traditional financial institutions may not be willing to finance HVAC due to their extreme cost.Honest Air Fayetteville NC

    ReplyDelete
  17. This is truly a great read for me. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work!. Portable Air Conditioner Black Friday Deals

    ReplyDelete
  18. Yet, on the off chance that you know in advance which brands you are keen on you will be progressively guaranteed of getting a decent arrangement on a framework you have picked not what they need you to have. Airco

    ReplyDelete
  19. We have sell some products of different custom boxes.it is very useful and very low price please visits this site thanks and please share this post with your friends. home sandblaster

    ReplyDelete
  20. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work Dryer Repair Wolf, Kenmore, Whirlpool, Sears, Viking, GE, Maytag, Bosch, FisherPaykel, RepairNearMe in Los Angeles

    ReplyDelete
  21. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work Wolf Oven Repair

    ReplyDelete
  22. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work Sub-Zero 300 Series Repair

    ReplyDelete
  23. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work Freezer Repair Sub-Zero, Viking, Scotsman, Kenmore, GE, U-Line, Monogram.

    ReplyDelete
  24. I like viewing web sites which comprehend the price of delivering the excellent useful resource free of charge. I truly adored reading your posting. Thank you! Air Conditioning Repair in Beverly Hills

    ReplyDelete
  25. I am a new user of this site so here i saw multiple articles and posts posted by this site,I curious more interest in some of them hope you will give more information on this topics in your next articles. Dryer Repair In Beverly Hills

    ReplyDelete
  26. Two full thumbs up for this magneficent article of yours. I've really enjoyed reading this article today and I think this might be one of the best article that I've read yet. Please, keep this work going on in the same quality. NXR Range Appliance Repair in Beverly Hiils

    ReplyDelete
  27. I think this is an informative post and it is very useful and knowledgeable. therefore, I would like to thank you for the efforts you have made in writing this article. Ranchos Penasquitos Appliance Repair

    ReplyDelete
  28. Really I enjoy your site with effective and useful information. It is included very nice post with a lot of our resources.thanks for share. i enjoy this post. Heating in Oshawa

    ReplyDelete
  29. Yes i am totally agreed with this article and i just want say that this article is very nice and very informative article.I will make sure to be reading your blog more. You made a good point but I can't help but wonder, what about the other side? !!!!!!Thanks Viking fridge repair near me

    ReplyDelete
  30. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work Uline, Marvel, Viking, SubZero ice maker leaking water on floor

    ReplyDelete
  31. Pretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts. Any way I'll be subscribing to your feed and I hope you post again soon. Big thanks for the useful info. Stove Repair in Sacramento

    ReplyDelete
  32. This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good work FREEZER REPAIR IN CAMARILLO

    ReplyDelete
  33. This thermally determined cooling and air-conditioning process is at the core of each sun oriented cooling framework. Airconditioning

    ReplyDelete
  34. I am very much pleased with the contents you have mentioned. I wanted to thank you for this great article. air duct service

    ReplyDelete
  35. It is a great website.. The Design looks very good.. Keep working like that!. granite countertops

    ReplyDelete
  36. As appliances age, the more they are considered "obsolete." This results to stores opting to fill their stockrooms with newer appliance parts.SubZero, Viking Refrigerator Repair in SAN MARINO

    ReplyDelete
  37. Next, you should slide the fuAirco installatie
    mes connector over the release opening at the rear of the versatile air conditioner.

    ReplyDelete
  38. We are really grateful for your blog post. You will find a lot of approaches after visiting your post. I was exactly searching for. Thanks for such post and please keep it up. Great work. ormarketingcompany

    ReplyDelete
  39. Positive site, where did u come up with the information on this posting? I'm pleased I discovered it though, ill be checking back soon to find out what additional posts you include. SubZero, Viking, Scotsman Ice Maker Repair in Los Angeles

    ReplyDelete