An ideal gas is taken through a cycle thermodynamic process through four steps. The amounts of heat involved in these steps are J 5585−=2Q ,J 5960=1Q, J2980−=3Q and J3635=AQrespectively. The corresponding works involved are J 1100−=3W ,J825−=2W ,J2200=1W. 4Wrespectively. i) Find the value of 4W ii) What is the efficiency of the cycle?

A) 700J, 10%

B) 600J,12%

C) 765 J,10.83%

D) 665 J, 10.83%

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

 

 

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