রেফ্রিজারেশন এন্ড এয়ারকন্ডিশনিং প্রশ্ন ও উত্তর ২০১৯

১) রেফ্রিজারেশন পদ্ধতি কাকে বলে
উত্তরঃ প্রক্রিয়ায় কোনো বস্তু বা আবদ্ধ স্থানের তাপকে বিভিন্ন তাপমাত্রায় আয়ত্ত রাখা এবং অপসারণ করা হয় তাকে রেফ্রিজারেশন পদ্ধতি বলে।

২) ওভারলোড এর কাজ কি
মোটর কে অতিরিক্ত লোডের ক্ষয় ক্ষতি থেকে রক্ষা করা ওভারলোড এর প্রধান কাজ।

৩) হিমায়ক পূর্ণ চার্জ অবস্থায় রিসিভার এর কত অংশ তরলে পূর্ণ থাকে ?
উত্তরঃ ১/৩ অংশ

৪) রেফ্রিজারেটরে R-12 এর পরিবর্তে কি কি রেফ্রিজারেন্ট ব্যবহৃত হয়?
উত্তরঃ R-134a, R-600a

৫) তাপ ও তাপমাত্রার মধ্যে তিনটি পার্থক্য লেখ ।
উত্তরঃ
তাপঃ (ক) তাপ এক প্রকার শক্তি।
(খ) তাপ কোন এক বিশেষ কারণ
(গ) তাপ শক্তি নিদর্শন।
তাপমাত্রাঃ
(ক) তাপমাত্রা বস্তুর তাপীয় অবস্থা।
(খ) তাপমাত্রা হলো তাপের ফল।
(গ) তাপমাত্রা শক্তির বহিঃপ্রকাশ।

৬) কম্প্রেসর কাকে বলে?
উত্তরঃগ্যাসীয় পদার্থ কে শোষণ এবং সংকোচন করে তাপমাত্রা ও চাপ বাড়িয়ে নির্গমন এর মাধ্যমে গতিশীল করা।

৭) রিমার কেন ব্যবহৃত হয়?
উত্তরঃ টিউব কাটার পর ধাতব কনা মুক্ত পরিষ্কার করা

৮) রেফ্রিজারেটরে কোন ধরনের রিলে ব্যবহ্নত হয়?
উত্তরঃ কারেন্ট কয়েল রিলে ।

৯) আরামদায়ক পানি ও তাপমাত্রা কত?
উত্তরঃ ৮ডিগ্রি সে. হতে ১২ ডিগ্রি সে.

১০) ওপেন টাইপ কম্প্রেসার এর পাঁচটি যন্ত্রাংশের নাম লেখ?
উত্তরঃ
(ক) সিলিন্ডার হেড, (খ) সিলিন্ডার, (গ) ক্র্যাঙ্কশ্যাফট, (ঘ) পিস্টন পিন, (ঙ) ডিসচার্জ ভালভ।

১১) সুপ্ত তাপ কি ?
উত্তরঃ স্থির তাপমাত্রায় একক ভরের পদার্থের অবস্থার পরিবর্তনের সময় যে তা গ্রহণ বা বর্জন করে তাকে সুস্থতা বলে।

১২) ডিহিউমিডিফায়ার কাকে বলে?
উত্তরঃ গ্রীষ্মকালে বাতাসের আদ্রতা তাপমাত্রা কমানোর প্রয়োজন হয়। বাতাসের আদ্রতা কমানোর পদ্ধতি কে ডি হিউমিফিকেশন এবং যার সাহায্যে আদ্রতা কমানো হয় তাকে ডিহিউমিডিফায়ার বলে।

১৩) CFC মুক্ত দুটি রেফ্রিজারেন্ট এর নাম লিখ?
উত্তরঃ R-134a, R-600a

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