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If Young’s modulus of tungsten carbide is 450 GPa, what will be Young’s modulus for 4% porous tungsten carbide?
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency and hd = Enthalpy or heat drop during expansion of steam in a nozzle)
When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be
Nitrogen gas flows into a convergent nozzle at 200 kPa, 400 K and very low velocity. It flows out of the nozzle at 100 kPa, 330 K. If the nozzle is insulated find the exit velocity.
When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be ____________
A 100 W light bulb has a tungsten filament (emissivity = 0.30) which is required to operate at 2780 K. If the bulb is completely evacuated, calculate the minimum surface area of the tungsten filament
Tools that are made of tungsten-chromium contain _____ of tungsten.
How is Tungsten Halogen lamp differs from normal Tungsten filament lamp used in absorption spectroscopy?
An assertion (A) and a reason (R) are given below. Assertion (A) : Tungsten filament is used for making light bulbs. Reason (R) : Tungsten has a high melting point. Choose the correct option.