ISRO Scientist or Engineer Mechanical 2011

Instructions

For the following questions answer them individually

Question 11

A fluid jet is discharging from a 100 mm nozzle and the vena contracta formed has a diameter of 90 mm. If the coefficient of velocity is 0.95, then the coefficient of discharge for the nozzle is

Video Solution


Question 12

A fully developed laminar viscous flow through a circular tube has the ratio of maximum velocity to average velocityas

Video Solution


Question 13

If the surface tension of water-air interface is 6.073 N/m, the gauge pressure inside a rain drop of 1 mm diameter will be

Video Solution


Question 14

A stream function is given by $$(x^2 - y^2)$$. The potential function of the flow will be

Video Solution


Question 15

The temperature profile between two metal walls joined together is shown in Fig.From the figure it can be concluded that

Video Solution


Question 16

According to Fourier’s law, amount of heat flow (Q) through the body in unit time is equal to

Video Solution


Question 17

Pitch diameter is equal to the product of

Video Solution


Question 18

The tension in the cable supporting a lift moving upwardsis twice the tension when the lift moves downwards. Whatis the acceleration of the lift? |

Video Solution


Question 19

Whirling speed of a shaft coincides with the natural frequency of its

Video Solution


Question 20

Oscillation of a particle is prescribed by the equation $$ x = 3 \cos(0.25 \pi t),$$ where t is the time in seconds. The time taken by the particle to move from position of equilibrium to maximum displacement is

Video Solution


Register with

OR

Boost your Prep!

Download App