Engineering, 05.03.2021 06:30 HOPING4632
a multiple unit electric train has 800 tonne mass. The resistance to motion is 100N per tonne of the train mass. If the electric motors can provide 200 kN tractive force, how long does it take to accelerate the train to a speed of 90km h from rest.
Answers: 3
Engineering, 04.07.2019 18:10
During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50Ā°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 Ā°c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 18:20
Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)
Answers: 3
a multiple unit electric train has 800 tonne mass. The resistance to motion is 100N per tonne of the...
Mathematics, 04.09.2020 01:01
Mathematics, 04.09.2020 01:01
Mathematics, 04.09.2020 01:01
Chemistry, 04.09.2020 01:01
Mathematics, 04.09.2020 01:01
English, 04.09.2020 01:01
Mathematics, 04.09.2020 01:01
Mathematics, 04.09.2020 01:01