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Electrical Engineering
Assume a receiver with effective noise temperature of 300K and 1MHz bandwidth. Calculate the thermal noise level at the receiver’s output
Mechanical Engineering
Design sleeve and cotter joint to withstand a load of 60kN. All parts of the
joint are made of same material and the permissible stresses are 60 N/mm2
in tension, 125 N/mm2
in compression and 70 N/mm2
in shear
joint are made of same material and the permissible stresses are 60 N/mm2
in tension, 125 N/mm2
in compression and 70 N/mm2
in shear
Mechanical Engineering
A 65mm diameter solid shaft is to be welded to a flat plate by a fillet weld
around the circumference of the shaft. Determine the size of weld if the
torque on the shaft is 3KN-m. The allowable shear stress in the weld is 70
N/mm2
around the circumference of the shaft. Determine the size of weld if the
torque on the shaft is 3KN-m. The allowable shear stress in the weld is 70
N/mm2
Chemical Engineering
A car manufacturer claims that its car can accelerate from rest to 28 m/s in 14 seconds. Find the average acceleration and the distance the car has traveled while in the process of stopping
Chemical Engineering
A car is moving at 17.7 m/s when it begins to slow down with a deceleration of 2.5 m/s2. How long does it take for the car to travel 80 meters as it slows down?
Electrical Engineering
A truck proceeds to be able to pass another truck. Its speed increases from 50 to 100 km/h in 4 seconds. What is its average acceleration?
Electrical Engineering
Two runners are competing in a 400-meter dash. The first run at 6 m/s and maintains this speed. The second runner starts at 10 m/s and decelerates at 1/8 m/s2. Who will finish first? What will be their time difference?
Mechanical Engineering
A mass of 12 kg falls 50mm on to a collar at the lower end of a vertical steel bar of diameter 25mm and length 3m. Determine the maximum instantaneous stress occuring in the bar and also the maximum extension that takes place. E= 210 KN/mm^2
Mechanical Engineering
Determine the variation in stress in fully restrianed steel members resulting from change in ambient temperature.
Coefficient of linear expansion for steel, = 11×10^-6/
Coefficient of linear expansion for steel, = 11×10^-6/
Mechanical Engineering
Assume 2 kg of air at 3.03975 MPaa (30 atm), 143 K undergo a constant pressure process until the temperature becomes 293 K. From Item B 26, determine the total change of enthalpy and entropy. Show Ts sketch of process.
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#339914 on Dec 2023
#339914 on Dec 2023