Engineering, 18.12.2019 21:31, sssudeegaming1943

# Air contained in a rigid, insulated cubic tank of edge 1 m, fitted with a paddle wheel, undergoes a stirring process between state 1: t1 = 40 °c, p1 = 400 kpa; and state 2: p2 = 800 kpa.(a). determine the temperature change in this process.

(b). determine the work done by the paddle wheel in this stirring process.

(c). determine the entropy generation in this process.

Answers: 3

Engineering, 04.07.2019 16:10, TheOriginalMeyah

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Answers: 2

Engineering, 04.07.2019 18:10, niyawilliams23

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Answers: 1

Engineering, 04.07.2019 18:20, samueltaye

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?

Answers: 1

Engineering, 04.07.2019 18:20, bella2331

Oxygen at 300 kpa and 400 k is in a closed system with an initial volume of 0.1 m3. it is now compressed in a polytropic process, with exponent of n 1.2, to a temperature of 500 k. calculate: a) the boundary work done during the compression, in kj

Answers: 1

Air contained in a rigid, insulated cubic tank of edge 1 m, fitted with a paddle wheel, undergoes a...

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