A penstock is 3000 meters long. Pressure wave travels in it with a velocity of 1500 m/s. If the turbine gates are closed uniformly and completely in a period of 4.5 seconds, then it is called
Question 2
A turbine generates the power of 150,000 kW while working at the speed of 300 rpm at the head of 100 m. What is the specific speed of the turbine?
Question 3
Which one of the following is correct for impulse turbine?
Question 4
Consider the following statements regarding fluid flowing past a flat plate:
1. The velocity gradient inside the boundary layer decreases with the depth of the boundary layer.
2. Flow is irrotational inside the boundary layer.
3. Boundary layer thickness increases as the distance from the leading edge increases.
Select the correct statements.
Question 5
Which of the following is CORRECT to maximize the efficiency of all reaction turbines?
Question 6
A vehicle was travelling with a speed of 90 kmph. The driver notices an obstacle and it took 1.5 sec for the driver to respond to the situation. What will be ratio of breaking distance to lag distance if coefficient of longitudinal friction on the road is 0.35 . (g = 10 m/sec2)
Question 7
Consider the following statements:
(i) Superelevation is limited to a maximum value primarily to make construction less costly.
(ii) while calculation super elevation maximum value of longitudinal friction can be 0.15
Which of the above statements are correct?
Question 8
The following purposes served by a transition curve in a highway alignment include: 1) Gradual introduction of the centrifugal force on moving vehicles from zero on the straight alignment to a constant final value on the circular curve. 2) Enabling the gradual introduction of superelevation on the roadway. Select the correct answer using the codes given below :
Question 9
Two vehicles are approaching each other at a right angle to each other at an intersection with a speed of 60 and 40 kmph respectively. Calculate the sight distance required at the intersection to avoid a collision. Take value of coefficient of longitudinal friction equal to 0.35.
Question 10
A vehicle is negotiating a horizontal curve with a velocity of 50 kmph. The width and height of the vehicle is 1.80 m and 1.50 m respectively. Assume no super elevation is provided, what is the value of maximum lateral friction coefficient so that vehicle does not overturn?
