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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 52362. 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
2250if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?
4 9151a)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 33877I 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???
1942How 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 24726When 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 13031What makes the difference between 50Hz supply and 60Hz supply which one is economical and how can you support your answer...........?
2 8036
CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS
How can the particle size distribution be determined in a given bulk solid?
i want to held the examination of the bpsc.pl gave the condition &prepare to eam &whose subjet are chose
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
I am having 17 months experience in development.I want to take testing as my career.I dont have experience in testing. Will get job anywhere?
WAP in Java to print the format AMIT M I T
Can you give an example of a successful aircraft modification or retrofit project you've been involved in and the outcomes achieved?
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
What is made from large rocks, which protects the base of cliffs?
Why do we use distinct polarisation (UL-H:DL-V) while uplinking and downlinking rather than same (UL-H:DL-H)?
How the engine does start working when we start our two wheeler?
I have completed building maintenance course in mcvc stream .. can I apply for the post of " sthapstya abhiyantriki sahayyak"?
What are potential transformers?
explain the omportance of "squish" and "swirl" in ci engine
What is the use of worm gears?
