CBSE PORTAL : KVPY Exam QUESTION PAPERS : Stream SA,SB-SX & Answer Keys 2012 |  |
- KVPY Exam QUESTION PAPERS : Stream SA,SB-SX & Answer Keys 2012
- CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Auto Engineering
- CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Mechanical Engineering
- KVPY Exam QUESTION PAPERS : Stream SA,SB-SX & Answer Keys 2011
- CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Applied Physics
- CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Engineering Science
- CBSE Class-12 Exam 2017 : Marking Scheme, Home Science
| KVPY Exam QUESTION PAPERS : Stream SA,SB-SX & Answer Keys 2012 Posted: 20 Jul 2017 11:06 PM PDT KVPY Exam Question Paper 2012
Exam Name : Kishore Vaigyanik Protsahan Yojana EXAM QUESTION PAPERSSubject : Maths, Physics, Chemistry, BiologyYear : 2012
Courtesy: KVPY
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| CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Auto Engineering Posted: 20 Jul 2017 01:43 AM PDT CBSE Class-12 Exam 2017 : All India SchemeQuestion Paper, Auto EngineeringCBSE Class-12 Exam 2017 : Auto Engineering
मोटर अभियांत्रिकी (सैद्धान्तिक) AUTO ENGINEERING (Theory) समूह-क GROUP-A १. ट्रकों में प्रयुक्त होने वाले ‘रियर ऐक्सलङ्क होते हैं (क) अर्ध-फ्लोटिंग (ख) पूर्ण-फ्लोटिंग (ग) तीन-चौथाई-फ्लोटिंग (घ) उपर्युक्त में से कोई नहीं The types of ‘Rear Axle’ used on trucks are (a) Semi-floating (b) Fully-floating (c) Three-quarter-floating (d) None of the above २. ‘स्टीयरिंग qलक-रॉडङ्क का दूसरा नाम है (क) ट्रैक रॉड (ख) टाई रॉड (ग) ड्रैग qलक (घ) पिटमैन Another name of the ‘Steering Link-Rod’ is (a) Track Rod (b) Tie Rod (c) Drag Link (d) Pitman ३. ‘फ्रेमङ्क एक मμजबूत ढाँचे की बनावट (रचना) होती है जिस पर कसे होते हैं (क) इंजन (ख) क्लच तथा पारेषण (ट्राँसमिशन) प्रणाली (ग) रबर-कुशन मोटर (घ) उपर्युक्त सभी असेम्बलियाँ ‘Frame’ is a rigid structure that forms a skeleton which is used to hold (a) Engine (b) Clutch and Transmission system (c) Rubber-cushioned motor (d) All the above said assemblies Click Here to DownloadCourtesy: CBSE    |
| CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Mechanical Engineering Posted: 20 Jul 2017 01:30 AM PDT CBSE Class-12 Exam 2017 : All India SchemeQuestion Paper, Mechanical EngineeringCBSE Class-12 Exam 2017 : Mechanical Engineering
यांत्रिक अभियांत्रिकी (सैद्धान्तिक) MECHANICAL ENGINEERING (Theory) निर्धारित समय : 3 घण्टे, अधिकतम अंक : 60 Time allowed : 3 hours, Maximum Marks : 60 निर्देश : (i) किन्हीं पाँच प्रश्नों के उत्तर दीजिए । (ii) सभी प्रश्नों के अंक समान हैं । Instructions : (i) Attempt any five questions. (ii) All questions carry equal marks १. (क) सरल चेन ड्राइव का चित्र के साथ वर्णन कीजिए । चेन ड्राइव की तुलना गियर ड्राइव से कीजिए । ८ (ख) सुपरहीटर का कार्य समझाइए । ४ (a) Describe simple chain drive with sketch. Compare a chain drivewith a gear drive. (b) Explain the function of a superheater. २. (क) कॉकरन बॉयलर की कार्यप्रणाली की व्याख्या कीजिए । ८ (ख) वाटर टरबाइन के कार्यकारी सिद्धांत को समझाइए । ४ (a) Explain the working of a Cochran boiler. (b) Explain the working principle of water turbine. ३. (क) कैप्लन टरबाइन की कार्यप्रणाली की व्याख्या स्वच्छ चित्र सहित कीजिए । ८ (ख) स्पीड कोन पुल्ली का स्वच्छ चित्र बनाइए । ४ (a) Explain with a neat sketch the working of Kaplan turbine. (b) Draw a neat sketch of speed cone pulley. ४. (क) चार-स्ट्रोक डीμजल इंजन की कार्यप्रणाली का वर्णन कीजिए । ८ (ख) टावर क्रेन का कार्य समझाइए । ४ (a) Describe the working of a four-stroke diesel engine. (b) Explain the function of a tower crane. Click Here to DownloadCourtesy: CBSE    |
| KVPY Exam QUESTION PAPERS : Stream SA,SB-SX & Answer Keys 2011 Posted: 20 Jul 2017 01:17 AM PDT KVPY Exam Question Paper 2011
Exam Name : Kishore Vaigyanik Protsahan Yojana EXAM QUESTION PAPERSSubject : Maths, Physics, Chemistry, BiologyYear : 2011
Courtesy: KVPY
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| CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Applied Physics Posted: 20 Jul 2017 01:13 AM PDT CBSE Class-12 Exam 2017 : All India SchemeQuestion Paper, Applied PhysicsCBSE Class-12 Exam 2017 : Applied Physics
व्यावहारिक भौतिकी (सैद्धान्तिक) APPLIED PHYSICS (Theory) निर्धारित समय : 3 घण्टे, अधिकतम अंक : 60 Time allowed : 3 hours, Maximum Marks : 60 निर्देश : सभी प्रश्नों के उत्तर दीजिए । Instructions : Attempt all questions. १. (अ) स्थिर-विद्युतिकी में गाउस का प्रमेय अभिव्यक्त कीजिए । इस प्रमेय का प्रयोग करके एक लम्बे, सीधे, आवेशित चालक के निकट किसी बिन्दु पर विद्युत्-क्षेत्र तीव्रता ज्ञात करने के लिए सूत्र की स्थापना कीजिए । ५ अथवा एक बहुत ब‹डी समतल चादर पर विद्युत् आवेश का घनत्व ५ ucm–2 है । उससे २५ सेी की दूरी पर विद्युत्-क्षेत्र तीव्रता की गणना कीजिए । (ब) चुम्बकीय क्षेत्र में गतिमान बिन्दु आवेश पर लगा बल किन-किन घटकों पर निर्भर करता है ? बल तथा इन घटकों के बीच का सूत्र लिखिए । इस बल की दिशा निर्धारित करने के लिए प्रयोग में लाए जाने वाले नियम का नाम लिखिए । ५ (स) स्वच्छ परिपथ आरेख की सहायता से, एक p-n-p ट्राँजस्टर की कार्यविधि की, जंक्शन पर उपयुक्त बायस लगाए जाने पर विद्युत् आवेशों के गतिमान होने को प्रदर्शित करते हुए, व्याख्या कीजिए । ५ (a) State Gauss’ theorem in electrostatics. Apply it to establish a relation for the electric field strength at a point near a long, straight, charged conductor. OR A very large plane sheet has a charge density of 5 ucm–2. Calculate the electric field strength at a distance of 25 cm from it. (b) On what factors does the force experienced by a moving point charge inside a magnetic field depend ? Write the relation between the force experienced and these factors. Name the rule used to determine the direction of this force. (c) With the help of a neat circuit diagram, explain the working of a p-n-p transistor indicating the movement of charge carriers through it when suitable bias is applied across the junctions. Click Here to DownloadCourtesy: CBSE    |
| CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Engineering Science Posted: 20 Jul 2017 01:01 AM PDT CBSE Class-12 Exam 2017 : All India SchemeQuestion Paper, Engineering ScienceCBSE Class-12 Exam 2017 : Engineering Science
अभियांत्रिकी विज्ञान (ऑटो ोबाइल तकनीकी, संरचना एवं निर्माण तथा वातानुकूलन एवं प्रशीतन के लिए समान) (सैद्धान्तिक) प्रश्न-पत्र ख ENGINEERING SCIENCE (Common for Automobile Technology, Structure & Fabrication and Air-Conditioning & Refrigeration) (Theory) Paper I निर्धारित समय : 3 घण्टे, अधिकतम अंक : 70 Time allowed : 3 hours, Maximum Marks : 70 भाग - I इंजीनियरिंग ड्राइंग PART – I ENGINEERING DRAWING निर्देश : सभी प्रश्नों के उत्तर दीजिए । Instructions : Attempt all questions. १. एक सम षड्भुजाकार पिरामिड जिसकी आधार भुजा ३० मिमी तथा अक्ष की लम्बाई ७४ मिमी है, एच.पी. पर अपने आधार पर इस प्रकार से टिका है कि इसकी एक आधार भुजा वी.पी. के समानान्तर है । इसे एक सेक्शन प्लेन, जो एच.पी. पर लम्बवत् है तथा वी.पी. से ३५ पर झुका है, इस पिरामिड को इसके अक्ष से गुμजरते हुए काटता है । इसका छेदित सम्मुख दृश्य तथा ऊपरी दृश्य बनाइए । १५ A regular hexagonal pyramid of base side 30 mm and axis 74 mm long, is resting on its base on HP in such a way that one side of the base is parallel to VP. It is cut by a section plane, perpendicular to HP and inclined at 35 to VP and passes through the axis of the pyramid. Draw its sectional front view and top view. २. एक पंचभुजाक ार प्रिμज्म, जिसकी आधार भुजा ४० मिमी तथा ऊँचाई ८० मिमी है, एच.पी. पर अपने आधार पर टिका है । इसकी एक आधार भुजा वी.पी. के समानान्तर और प्रेक्षक के समीप है । इसे एक सेक्शन प्लेन, जो वी.पी. पर लम्बवत् है और एच.पी. पर ३५ से झुका है, प्रिμज्म के अक्ष पर एक बिन्दु जो आधार से ३० मिमी ऊपर है, गुμजरते हुए काटता है । कटे हुए प्रिμज्म की पाश्र्वीय (लेटरल) सतहों का विस्तार चित्र बनाइए । १५ A pentagonal prism of base side 40 mm and height 80 mm is resting onits base on HP. Its one base side is parallel to VP and nearest to the observer. It is cut by a section plane, perpendicular to VP and inclined at 35 to HP and passes through a point on the axis, 30 mm above the base of the prism. Draw the development of the lateral surfaces of the truncated prism. Click Here to DownloadCourtesy: CBSE    |
| CBSE Class-12 Exam 2017 : Marking Scheme, Home Science Posted: 20 Jul 2017 12:06 AM PDT  CBSE Class-12 Exam 2017 : Marking SchemeQuestion Paper, Home ScienceCBSE Class-12 Exam 2017 : Home Science (Delhi)CLASS XII HOME SCIENCE (064) MARKING SCHEME (2016- 2017) DELHI LOCAL 69/1 I. The Marking Scheme carries only suggested value points for the answers. These are only guidelines and do not constitute the complete answer. The students can have their own expression and if the expression is correct, the marks be awarded accordingly II. As per orders of the Hon’ble Supreme Court, the candidates would now be permitted to obtain photocopy of the Answer book on request on payment of the prescribed fee. All examiners/ Head Examiners are once again reminded that they must ensure that evaluation is carried out strictly as per value points for each answer as given in the Marking Scheme. III. All the Head Examiner/ Examiners are instructed that while evaluating the answer scripts, if the answer is found to be totally incorrect the (x) should be marked on the incorrect answer and awarded ‘0’ marks. 1 . Other than FSSAI, mention the standard marks you should check while buying a bag of wheat flour and a bottle of mango pickle ? [1] i. Wheat flour – Ag mark ii. Mango pickle – FPO [ ½ x2=1] 2 List any two facilities which are provided for the workers at the worksite , under MGNREGA . [1] Provision of: i. Shade ii. First aid iii. Drinking water , iv. Crèche (Any two ) [ ½ x2=1] 3 Inform the staff at the ICDS centre about the change in daily needs of protein for pregnant women. [1] 55gm +23gm / 78 gm /+23 gm [1 mark ] Click Here to DownloadCBSE Class-12 Exam 2017 : Home Science (Outside)CLASS XII HOME SCIENCE (064) MARKING SCHEME (2016- 2017) OUTSIDE DELHI/69 I. The Marking Scheme carries only suggested value points for the answers. These are only guidelines and do not constitute the complete answer. The students can have their own expression and if the expression is correct, the marks be awarded accordingly II. As per orders of the Hon’ble Supreme Court, the candidates would now be permitted to obtain photocopy of the Answer book on request on payment of the prescribed fee. All examiners/ Head Examiners are once again reminded that they must ensure that evaluation is carried out strictly as per value points for each answer as given in the Marking Scheme. III. All the Head Examiner/ Examiners are instructed that while evaluating the answer scripts, if the answer is found to be totally incorrect the (x) should be marked on the incorrect answer and awarded ‘0’ marks. 1. Other than FSSAI, which Standard mark should you check while buying soyabean oil and milk powder? [1] i. Soyabean oil- Ag mark ii. Milk powder-ISI [1/2 X 2 =1] 2. List any two responsibilities of the Gram Panchayat under MGNREGA [1] Responsibilities of Gram Panchayat i. Responsible for running the scheme ii. Register the family under MGNREGA iii. Give a job card. iv. Provide work to the job card holder v. Give unemployment allowance vi. Ensures facilities at worksite - shade, crèche, drinking water and first aid [1/2X 2 =1] (Any two) 3. Inform the staff at the ICDS centre about the changes in daily needs of iron and calcium for pregnant women. [1] i. Iron -35 mg or 21mg +14mg or +14mg ii. Calcium – 1200 mg or 600mg+600mg or +600 mg [1/2X 2 =1] 4. Draw a symbol for label which indicates the quality and purity of a woollen sweater. [1] Note: Wool mark has five strands/skeins on each side. No marks to be deducted for poor drawing. Courtesy: CBSE    |
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