Search
3.2. Nitrogen (molar mass 28 kg/kimol) expands reversibly in a perfectly thermally (insulated) cylinder from 3.5 bar, 200°C to a volume of 0,09 m°. The initial volume occupied was 0.03 m". Assume nitrogen to be a perfect gas and take Cy = 0.741 kJ/kg K. Calculate the work done.
What makes axial flow fans more suitable for applications where large flow rates of air are to be handled. What new developments have taken place in the design of fans for air conditioning applications?
determine the saturated temperature, saturated pressure and enthalpy for water at specific volume of saturated vapor at 10.02 m³/kg
Two kg of air in a closed system undergoes an isothermal process from 606 kPa and 200°C to 75 kPa. The heat transfer (expressed to ZERO decimal places) during the process is in kJ:
From the tables (air is assumed as ideal gas based on given conditions), the gas constant for air: R = 0.2870 kJ/kg·K.
Design a spring for suspension system of a motorcycle with a weight of two people riding the bike. You should assume the required parameters as per the following table,
Sr. No.
Reg No
Starting d
Difference for selection of diameter
Ends of spring
1
1-10
0.01 x R
0.001 x R
Squared or Closed
2
11-20
0.01 x R
0.001 x R
Squared or Closed
3
21-30
(0.01 x R)/2
0.001 x R
Squared and Ground
4
31-40
(0.01 x R)/2
0.001 x R
Squared and Ground
5
41-50
0.01 x R
0.001 x R
Squared or Closed
6
51-60
0.01 x R
0.001 x R
Squared or Closed
7
61-70
(0.001 x R)/2
0.001 x R
Squared and Ground
8
71-80
(0.001 x R)/2
0.001 x R
Squared and Ground
* where R = Your Registration Number
Start your calculation first by using material 302 stainless steel and if the required result is not output, then change the material till you find one. Select the spring as wound.
HINT: Make an excel sheet for making the table of spring selection.
A rope AB, 2.7 m long is connected at A and B to two points on the same level, 2.4 m apart. A load of 136 N is suspended from a point C on the rope 90 cm from A. What load connected to a point D on the rope, 60 cm from B, will be necessary to keep the portion CD level?
An air standard ideal Diesel engine (k for air = 1.4) operates with a pressure and temperature at the start of the compression stroke of 14.7 psia and 550°R. If the cut-off ratio and clearance volume are 2.5 and 1.0 ft3, respectively, calculate
(a) Pressure, temperature and specific volume at the 4 states of the cycle
(b) Clearance
(c) Thermal efficiency
(d) MEP for the cycle.
The baggage truck A has a mass of 800 kg and is used to pull each of the 300-kg cars. If the tractive force F on the truck is = 480 N, determine:
a) The initial acceleration of the truck.
b) Forces in coupling B and C.
c) What is the acceleration of the truck if the coupling at C suddenly fails?
The car wheels are free to roll. Neglect the mass of the wheels.
answer asap.
A 150mm-diameter hollow sphere weighing 300 N is attached to a solid concrete block weighing 5.3 kN. If the concrete has a specific weight of 27.7 kN/m3, what will be the state of the two
A 150mm-diameter hollow sphere weighing 300 N is attached to a solid concrete block weighing 5.3 kN. If the concrete has a specific weight of 27.7 kN/m3, what will be the state of the two objects together in water?
