How is Reynolds number calculated?

How is Reynolds number calculated? Reynolds number (Rn) is defined as Rn=(ρVL)/μ=(VL)/ν, where V is the fluid velocity relative to the body and L is a typical length. What is the Reynolds number for laminar flow? 2300 How is Reynolds number calculated for airfoil? Flow around airfoils Fluid dynamicists define the chord Reynolds number R […]

What determines voltage in a circuit?

What determines voltage in a circuit? Voltage is a specific measure of potential energy that is always relative between two points. The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow. How does current change with voltage? In a linear […]

What are permanent magnet DC motors used for?

What are permanent magnet DC motors used for? Applications of the Permanent Magnet DC Motor PMDC motors are mainly used in automobiles to operate windshield wipers and washers, to raise the lower windows, to drive blowers for heaters and air conditioners etc. They are also used in computer drives. These types of motors are also […]

What is optical microscopy used for?

What is optical microscopy used for? The optical microscope, also called the light microscope, uses a combination of light and lenses to magnify an image. Optical microscopes are used in the viewing of small objects such as cells. This type of microscope does not offer the highest magnification and so when viewing a cell has […]

What is the fastest car in the world 2020?

What is the fastest car in the world 2020? 2020 SSC Tuatara Hypercar What are the top 10 fastest cars in the world 2020? The Fastest Production Cars in the World 2020 McLaren Senna: 208 MPH. 2020 Ferrari F8 Tributo: 211 MPH. 2020 Aston Martin DBS Superleggera: 211 MPH. 2020 Ferrari 812 Superfast: 211 MPH. […]

Does a higher gear ratio mean more torque?

Does a higher gear ratio mean more torque? A numerically higher axle ratio provides a mechanical advantage to send more of the engine’s available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow […]

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