A fin will be more effective when Bio number is

A tank of length, breadth and height in the ratio of 2:1:2 is full of water. The ratio of hydrostatic force at the bottom to that at any larger vertical surface is

Which of the following fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate?

What is the specific gravity of a marble stone, which weighs 400N in air, and 200N in water? (g=10m/s²)

What is the intensity of pressure in the following SI units, when specific gravity of mercury is 13.6 and the intensity of pressure is 400KPa ?

Consider the following statements:
1.If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
2.A slight horizontal displacement does not change either the magnitude or the location of the buoyant force 
Which of the above statements is/are correct? 

State whether following flow field is physically possible? 

In a differential manometer, a head of 0.5 m of fluid A in limb 1 is found to balance a head of 0.3 m of fluid B in limb 2. The atmospheric pressure is 760 mm of mercury. The ratio of specific gravities of A to B is

On which of the following just in time manufacturing philosophy emphasizes ?

In a stream line steady flow, two points A and B on a stream line are 1m apart and the flow velocity varies uniformly from 2m/s to 5m/s. What is the acceleration of fluid at B?

The stream function is given by Ψ = 3xy, then the velocity at the point (2,3) is

The boundary layer thickness at a given distance from the leading edge of a flat plate is

In a laminar flow through a circular pipe, the discharge varies

A fluid is flowing over a flat plate. At distance of 8 cm from the leading edge, the Reynolds number is found to be 25600. The thickness of the boundary layer at this point is

Air is flowing over a flat plate with a free stream velocity of 24 m/s, and its kinematic viscosity is 72 ×10^-6m²/s. If at a particular point, the Reynolds number is 30000, its location from the leading edge is

In a refrigerator, the evaporator and condenser coil temperatures are –33°C and 27°C, respectively. Assuming that the maximum COP is realized, the required power input for a refrigerating effect of 4 kW is
 

In a hydraulic coupling

Consider the following statements:
1.The wheel can be operated freely in air
2.Pressure at the exit of the nozzle is atmospheric
3.Pressure does not vary along the moving vanes
4.Change the direction of momentum imparts thrust over moving vanes Which of the following statements are applied to impulse turbine?

A water jet 0.0015m²in area issues from a nozzle with 15 m/s velocity. It is made to impinge perpendicular on to a plate that moves away from the jet with a velocity of 5 m/s. The force on the plate due to this impact is

Consider the following statements with regard to hydraulic turbines:
1.Kaplan turbines are most efficient at part load operations.
2.If n is the number of jets in a Pelton turbine, then the specific speed is proportional to n².
3.The flow ratio of Francis turbines are in the range of 0.1 – 0.3. 
Which of the above statements is/are correct? 

Which of the following is a Vector quantity ?

Bernoulli’s equation is applicable between any two points located in

Water flows through a smooth circular pipe of diameter D and length L because of a pressure difference ΔP across the length. The volume flow rate is Q and the flow is turbulent with Reynolds number 10⁵. If the pressure difference is increased to 4ΔP the volume flow rate will be

For laminar flow through a round pipe, the shear stress

Percentage clongation during tensile test is indicative of

Which of the above statements is not correct in the context of laminar flow through a pipeline?

Laminar flow between closely spaced parallel plates is governed by the consideration of which one of the following pair of forces?

Formation and collapse of vapour bubbles are believed to be the root cause for cavitation in hydraulic turbines. Most favorable condition for the formation of bubbles is set in the turbine at

For fully developed laminar flow through a circular pipe with Reynolds number Rethe friction factor is

The ratio of power outlet of the pump to the power input to the pump is known as

A pump is defined as a device which converts

The specific speed of a pump is defined as the speed of the unit of such a size that is

Negative slip occurs  in reciprocating pumps, when delivery pipe is

The pressure inside a soap bubble of 50 mm diameter is 25 N/m² above the atmospheric pressure. The surface tension in soap film would be

A Newtonian fluid is one which

Unlike the viscosity of fluids, the viscosity of gases increases with increasing temperature. This is due to

Manometer is a device used for measuring

When a dolphin glides through air, it experiences an external pressure of 0.75 m of mercury. The absolute pressure on dolphin when it is 5m below the free surface of the water is

Yojna a weekly journal

Kurukshetra a journal on rural development is published by

What was the real name of Amir Khusro?

Which is the national game of Bhutan ?

When was the Constituent Assembly of India formed?

Who was the Chairman of the Drafting Committee of the Indian Constitution?

What major defence-related development was highlighted on 1 May 2026 involving India and Italy?

Which satellite was launched by ISRO around early May 2026?

What is Prerna 2.0, launched/introduced in the news on 1 May 2026?