Engineering Answers

A cylinder of volume 0.5m³ of steam at 4 bar and 200⁰c.if the steam is cooled at constant pressure until the volume become 0.1m³,find the mass of the steam and calculate the final dryness of fraction, work done and heat transfer

What do you understand by a balanced three-phase load?

A cylinder that contains 0.067 kg of carbon dioxide (with molar mass 44 kg/kmol), occupying a volume of 0.022 m3 at 1.0 bar is compressed reversibly until the pressure is 7.20 bar. If the molar (universal) gas constant as 8.3145 kJ/kmol K, calculate the the work done on the C02 (in J) when the process is isothermal.

R1, = 6 Ω, R2 = R3 = 2 Ω, and voltage = 14 volt, determine the total electric current in circuit as shown in figure

below.

1. Liquid reactant A decomposes as follows:

A feed of aqueous A (𝐶𝐴𝑜= 40 mol/m3) enters a reactor, decomposes, and

a mixture of A, R, and S leaves.

I. Find 𝐶𝑅and 𝐶𝑆

for 𝑋, = 0.9 and t=2min in a Batch Reactor?

II. Find 𝐶𝑅and 𝐶𝑆

for 𝑋, = 0.9 and 𝛳𝐹 = 2.5 𝑚𝑖𝑛 in a Tank- Reactors?

III. Find 𝐶𝑅and 𝐶𝑆

for 𝑋, = 0.9 and 𝛳𝐹 = 2.5 𝑚𝑖𝑛 in a plug flow reactor?

IV. Find selectivity and yield for Batch Reactor, Tank- Reactors and plug flow

reactor?

Note:- Before find 𝐶𝑅and 𝐶𝑆

first proof 𝐶𝑅and 𝐶𝑆 By substituting the value of 𝑛𝐴𝑎𝑛𝑑 𝐹𝐴 and

then integrating assume the re

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. Sketch the region, the solid, and a typical disk or washer.

The height above the ground of a child on a swing varies from 50 cm at the lowest point to 200 cm at the highest point

a. Draw the simple, clear and neat figure using drawing instruments.

b. Establish the equation of the energy conservation of the system.

c. Determine the maximum velocity of the child in cm/s?

To push a 25 kg wooden box up a 30° inclined plane, a man exerts a force of 150 N parallel to the inclined plane. The wooden box slides 5 meters and the coefficient of friction between the wooden box and the inclined plane is 0.25;

a. Draw the clear and neat figure of the system.

b. Draw the Force diagram.

c. Establish the convenient axis and reflect the component of the forces along the convenient axis.

1. A uniform 20 ft long and weighing 20lbs is held by Peter 2 ft from the left end while John carries the same bar 5 ft from the right end.

a. Draw the clear and neat figure. Label the figure properly.

b. Draw the force diagram and reflect the distances between the forces.

An opamp is working as an adder in which it consists of three resistances such as 30 ohm, 60 ohm and 90 ohm respectively. Three voltages are applied to these resistances in according to all resistances as 150v, 250v and 300v respectively. Then compose an adder and evaluate the total output voltage if it is having feedback resistance of 600ohm