Explanation

• Anti-dunes are bedforms that develop under supercritical flow conditions, where the Froude number is greater than 1.
• The Froude number is the ratio of flow inertia to the effect of gravity.

Additional information:

• Fr<1: Subcritical flow.
• Fr=1: Critical flow.
• Fr>1: Supercritical flow.

Last verified on 16-10-2026

Explanation

• Camshaft: Controls the opening and closing of the intake and exhaust valves at the correct time.

Additional information:

• Crankshaft: Converts the pistons’ reciprocating motion into rotational motion.
• Flywheel: Stores rotational energy and helps maintain smooth engine operation.

Last verified on 16-10-2026

Explanation

• Column are compression member or a tension member?
• What are the compression zone and tension zone in a column?
• What is porosity?
• What is permeable?
• Stress-strain curve of steel?
• What is yield point?
• In a pipe what will the pressure at the inlet section and outlet section is pressure will be same or different?
• What is discharge? 
• Discharge unit?
• What is slump?
• What is workability?
• Level shifting?
• What is Void Ratio 

Explanation

• Free vortex — rotation driven by gravity, no external energy input, velocity increases toward the center
• Example of a free vortex: water swirling down a drain

Additional information 

• Forced vortex — rotation driven by an external force (like a rotating impeller), velocity increases with radius

Explanation

• By the middle-third rule, the resultant must fall within the middle third of the base
• Max allowable eccentricity e=B/6 to avoid tension
• Keeps entire foundation in compression

Additional information 

• B/4: This would allow tension over part of the base.