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Because it has been decided that the right and upwards directions in a plane are the positive directions and the left and downwards are negative. Originally, the decisions were arbitrary but conventionally agreed (in the same sort of way that North is usually shown at the top of a map).
Any displacement in a positive direction is called a positive displacement.
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If the displacement is negative 2 north and represents a positive displacement What is the direction?
south
A -2 displacement towards the north represents a positive displacement towards the south?
Indeed it is.
What is the stationary point where two wave points meet?
They are the locations where the amplitudes of the two waves combine destructively. The positive displacement of one wave is exactly matched by the negative displacement of the other so that the overall displacement is zero.
What is the horizontal distance between called?
It is called the displacement in the horizontal direction.
Is costheta is a vector?
No. Cos theta (Cos θ) is a trigonometric function. A vector is any physical quantity which has both magnitude and direction. For example, Displacement. Displacement has a magnitude like 240m or 0 or 13 m, etc. It also depends on the direction. If an object moves along the positive direction of x-axis, then the displacement will have a positive sign and if it moves along the negative direction of x-axis, then displacement will be negative. Thus, it has both direction and magnitude and so is a vector. Cos theta is a trigonometric function, strictly speaking.
Why reciprocating compressor is called positive displacement compressor?
A reciprocating compressor is called a positive displacement compressor because it works by trapping a volume of gas and then reducing the volume to increase the pressure. This process ensures a constant flow rate and is based on the principle of displacing a fixed amount of gas with each stroke of the piston, hence the term "positive displacement."
Is it true that all hydraulic motor are positive displacement?
yes.only positive displacement pumps can be used in hydraulics
Why positive displacement pump is called positive displacement?
A positive displacement pump is called so because it displaces a specific quantity of fluid with each cycle of operation, regardless of the discharge pressure. This ensures a consistent flow rate that is proportional to the speed of the pump, making it ideal for applications where precise flow control is essential.
Why reciprocating pump is called positive displacement pump?
because they deliver a fixed quantity of the discharge irrespective of their rpm
Where we use positive displacement pumps?
A positive displacement pump causes a liquid or gas to move by trapping a fixed amount of fluid or gas and then forcing (displacing) that trapped volume into the discharge pipe. Positive displacement pumps can be further classified as either rotary-type (for example the rotary vane) or lobe pumps similar to oil pumps used in car engines.Moreover,these pumps give a non pulsating output or displacement unlike the reciprocating pumps and hence are called positive displacement pumps
What is the difference between a positive and non-positive displacement pump?
A positive displacement pump moves a constant volume of fluid for each cycle of operation, creating flow by direct displacement. In contrast, a non-positive displacement pump does not move a constant volume of fluid per cycle and relies on factors like speed and pressure to generate flow.
If the displacement is negative 2 north and represents a positive displacement What is the direction?
south
What is the high point of a wavelength called?
The high point of a wavelength is called the crest. It is the point on a wave that exhibits maximum positive displacement from the equilibrium position.
What uses positive pressure to move a fluid?
positive displacement pump
If displacement is decreasing then velocity is?
If displacement is decreasing, then velocity can be positive, negative, or zero, depending on the direction of motion. If the object is moving in the positive direction, a decreasing displacement may result in a positive velocity. If the object is moving in the negative direction, a decreasing displacement may lead to a negative velocity. If the object is stationary and its displacement is decreasing, the velocity is zero.
A -2 displacement towards the north represents a positive displacement towards the south?
Indeed it is.
How do you start the positive displacement pump?
with actuator
