What is the principle behind the Red Wood viscometer experiment?

Redwood Viscometer is used for the determination of redwood viscosity and which can be converted to Kinematic viscosity also. It is also used for observing the effect of temperature on viscosity by plotting graph.

What do you mean by Redwood viscosity?

Viscosity is a measure of fuel resistance to flow. When expressed in seconds Redwood at 100 degrees Fahrenheit, it is the time it takes for a fixed amount of fuel to pass through an orifice of fixed size at 100 degrees Fahrenheit.

What are the two types of Red Wood viscometer?

Redwood Viscometers – (SICBRV-01) Two adaption of Red Wood viscometer are available No. 1 for liquids having Red Wood flow 20 seconds to 2000 seconds and No. II for liquids whose flow time exceeds 2000 seconds.

Why does viscosity decrease with increase in temperature?

The increase in temperature causes the kinetic or thermal energy to increase and the molecules become more mobile. The attractive binding energy is reduced and therefore the viscosity is reduced.

What is the principle involved for measurement of viscosity?

The principle of Viscosity is stated here: When a layer of Liquid is subjected to move upon a surface or another layer of the same Liquid, the Fluid particles tend to oppose such movement; this resisting force developed by a Liquid is called Viscosity.

Why is Redwood viscometer used for low density oils?

Redwood Viscometer No. 1 is used to determine the viscosity of thin lubcricating oils (light oils), because the orifice is comparatively smaller. It can be used to determine the viscosity of kerosene, etc.

Why does viscosity increase when temperature decreases?

Why is it called Redwood viscometer?

Redwood Viscometer is for determining the viscosity of all oils, expressed in Redwood seconds at the temperatures of the test.

How many types of Redwood viscometers are there?

These instruments are for determining the viscosity of all oils, expressed in Redwood seconds at the temperatures of test as called for by IP 70. Both the types of viscometers, Redwood No. 1 and Redwood No. 2 electrical heating models are available.

What does viscosity depend on?

The viscosity of a liquid usually depends on its temperature. Viscosity generally decreases as the temperature increases. Viscosity generally increases as the temperature decreases. The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another.

What are the factors that affect viscosity?

CONCEPT: Viscosity: The state of being sticky, thick, and semi-fluid inconsistency, due to internal friction of fluids is called viscosity. The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.