Mechanical Engineering Answers

Dry air at a temperature of 270 C and pressure of 20 bars enters a nozzle and leaves at a pressure of 4 bar. Find the mass of air discharged, if the area of the nozzle is 200mm2.

A 10 by 10 array of horizontal tubes of 1.27 cm diameter is exposed to pure steam at atmospheric

pressure. If the tube wall temperature is 98°C, estimate the mass of steam condensed assuming a

tube length of 1.5 m

Three rotating masses, A= 14 kg, B =11 kg and C =21 kg are attached to a shaft

with center of gravity 275 mm, 400 mm and 150 mm from the shaft axis. The

angular position of B and C are 60° and 135º measured in the same direction

from A. The distance between plane AB is 1.35 m, AC is 3.6 m and plane B is

between AC. Two balance masses are to be fitted between plane A B and BC

and the center of gravity of each mass is 225mm from the shaft axis.

calculate the magnitude of balance masses

.

Find the equation of straight line passing through the points (2, 3) and (3,



1).

A volume of 0.36 m3 of air initially at a temperature of 20oC and a 03 pressure of 4bar is compressed reversibly and isothermally to a final

volume of 0.06m3. Calculate the mass, the final pressure, work done and

heat transfer. The specific heat and gas constant can be taken as 1kJ/kgK

and 287 J/kg

What is the use of Indentation in Python?

What is procedure oriented paradigm ?

A piulley supporting a load of 400 N is mounted at C on a horizontal beam .if the beam weighs 800N,find the support reactions at A and B . neglect the weights of the pulley.

A wholesaler packs bags of sugar with a nominal weight of 1000g using an automatic machine. A retailer is considering the purchase of a large batch, does not want too many bags to be noticeably underweight: he states that the sampling plan for the lot of 5000 bags requires a sample size of 80 and acceptance number of 1. Complete the Cumulative Poisson Distribution Table in Table 1 and sketch an Operational Characteristic (OC) Curve for eight points.

for the force system shown in figure (22), determine the resultant force (R) and the force (P). w=weight=200lb