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1. A single acting stage air compressor with 6% of clearance volume compresses air from 1.2 bar to 6.5 bar. Find the change in volumetric efficiency if the exponent of expansion process changes from 1.55 to 1.72.
2 53602. Dry saturated steam at 3.5 bar is expanded through a convergent nozzle to 2.2 bar. The exit area is 5 sq. cm. Calculate the exit velocity and mass flow rate, assuming isentropic expansion and super saturated flow. b) A cast iron cylinder head is fastened to a cylinder of 750mm bore with 12 stud bolts. The maximum pressure inside the cylinder is 3 Mpa. The stiffness of part is thrice the stiffness of the bolt. What should be the initial tightening load so that the point is leak proof at maximum pressure? Also choose a suitable bolt for the above application 2 The propeller shaft of a marine engine is to transmit 600 kW at 1200 rpm, without a significant bending. The efficiency of the propeller is 88% at 32 knots ( 1 knot = 1085 km/hr). If the slenderness ratio is less than 50 and the permissible shear stress should not exceed 65 Mpa. Determine the diameter of shaft. 3 A semi-elliptic leaf spring consists of two extra full-length leaves and six graduated length leaves, including the master leaf. Each leaf is 7.2 mm thick and 65 mm wide. The centre-to-centre distance between the two eyes is 1.3m. The leaves are pre-stressed in such a way that when the load is maximum, stress induced in all leaves are equal to 380 N/mm sq. Determine the maximum force that the spring can withstand
1 2323if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?
4 9358a)tell density of steel , concrete, bricks , sand and aggregates.? b) what is knife test for wooden doors ? c) what is the meaning of term abrasion? what is tested in it? d) why pile foundation is provided in BCS?e) By total station what activities can be performed and on what principle it works? f) what is creep?
4 34121I am a technical graduate with 2 years of experience in automobile industry. i want to prepare for air force technical level examination. will u pls tell me what is the syllabus or do u have some model question papers???
1 2015How to decrease or increase the range of voltmeter? can an ammeter be used to measure voltage? can a wattmeter used as voltmeter and ammeter?
3 24946When batteries are connected in series the voltage increases but the current remains unchanged, how can this be? When you consider ohm's law. i.e. If voltage increases, current increases, providing resistance remains the same.
10 13455What makes the difference between 50Hz supply and 60Hz supply which one is economical and how can you support your answer...........?
2 8219
Please send me the qunty. of mason/labour required in each day for different type of civil construction work?please send me ans. in my mail.my mail id is (parthamitra086@gmail.com) or here.
How to convert GSS duct volume in KG for all guages
can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.
What will be result if we connect LT votage to the terminal of HT motor?
How much stack emmission through your chimney and what is the state govt norms ?
Hi friends,anybody can send me previous HAL interview question paper OR all other interview question paper. To, yogeshnature@gmail.com
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THIS IS HARI PRASAD. I KNOW THAT HVAC MEANS HEATING VENTILATION & AIR- CONDITIONING. I NEED DESIGN CONSIDERATION OF HVAC UNIT.
please send me jindal previous aptitude and technical question and answer.my email id is deep_raj@live.com
i want the aptitude test papers of wipro can any one help plz
Sir, I wish to appear for the written test in the year 2009. But i have no syllabus on the basis of that the exam was held. So if you kindly give me the syllabus,it's easy for me to be prepared. I have already registered through online,and that no is 10857
cud any one send me tech quest paper(civil engg) at tarizus@yahoo.com
Pls mail me utility & Dg related question with answer
sir,,,, iam appearing in hpcl exam....so plz send previous papers to me of hpcl... anant
