Engineering Answers

In a four bar chain ABCD, link AD is fixed and the crank AB rotates at 10 rad/sec clockwise. Length of the links are AB=60

mm; BC=CD=70 mm; DA= 120 mm. When the angle DAB = 60o and both B and C lie on the same side of AD, find 1.angular

velocities (magnitude and direction) of BC and CD; and 2.angular acceleration of BC and CD.

A sling psychrometery in a laboratory test recorded the following readings. Dry bulb temperature 35°C

Wet bulb temperature = 25°C Calculate the following

(i) Specific humidity, (ii) Relative humidity

(iii) Vapour density in air dew point depression.

(iv) Dew point temperature and (v) Enthalpy of mixture per kg of dry air

Take atmospheric pressure = 1.0132 bar

Specific volume 7.40 m3 of air per minute at 31˚C DBT and 18.5˚C WBT is passed over the cooling

coil whose surface temperature is 4.4˚C. The coil cooling capacity is 3.56 tons of refrigeration

under the given condition of air. Determine DBT and WBT of the air leaving the cooling coil.

Design and Implementation of BCD Counter.

Design and implementation of sequence detector using Mealy/Moore

Machine.

1. A line CD 90 long is parallel to both HP and VP. The line is 45 in front of the VP and 60

above the HP. Draw the projections of the line.

2. A 90 long line is parallel to and 25 in front of the VP. Its one end is in the HP. While the other

is 50 above the HP. Draw its projections and find its inclination with the HP.

3. The top view of a 75 long line measures 55. The line is in the VP, its one end being 25 above

the HP. Draw its projections.

4. A line AB, 100 long, is inclined at 300

to the HP and 450

to the VP. The point A is 15 above

HP and 20 in front of VP. Draw its projections and locate its traces.

5. The distance between projectors of two points A and B is 70. Point A is 10 above HP & 15 in

front of VP. B is 50 above HP & 40 in front of VP. Find the shortest distance between A and B

and true inclinations.

A distributed load of w N/m is applied over an entire length of a simply supported beam 8m long. The beam section is made up of four 20mmx100mm rectangles arranged as shown. A. Determine the maximum value of w without exceeding the permissible flexure stress of 10MPa. B. Determine the maximum value of w without exceeding the permissible shear stress of 1.2MPa.C. Determine the maximum value of w without exceeding the permissible screw strength of 800N for a pitch of 75mm. * 

A 48V battery has an internal resistance of 0.22 ohm and is connected to a variable resistance load through a line resistance of 1.28 ohms. For what value of load resistance will the load power be maximum and what will be the load current, load power and power loss under this condition

Calculate the mutual inductance between two coils that are inductively coupled if 112V is induced in the secondary when the 60-cylce primary current is 2.8 Amp.

•   Question 2 of 4  

Question assume ideal and optimal operating conditions for the cycle and the re-heater. Air enters the cycle at 300K and 100kPa and it leaves the combustor at 975K and 1089kPa.

Calculate the (a) pressure (kPa) of the air leaving the re-heater