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What is second order instrument?
secondary instruments,as opposed to absolute instruments ,are direct reading type instruments.the value of an electrical quantity can be read directly from the deflection shown on the instruments.deflections on an un-calibrated secondary instrument are not a true measure of the electrical quantites.
What are the different methods of damping used in analog indicating instruments?
Damping torque can be provided by: (a) air friction damping (b) fluid friction damping (c) eddy current damping. In air friction damping, a light piston moves with a very small clearance in air chamber. The piston moves against pressure of air in air chamber. In fluid friction damping, light varies are attached to spindle of moving system. The movement of spindle is suppressed due to fluid friction, Eddy current damping is one of the most efficient method of damping. It is based on the principle that whenever a sheet of conducting but non magnetic material like copper or aluminum moves in magnetic field, eddy currents are induced.
What is the Name the instrument that beats time for musicians?
A metronome
Why does the pitch of a tubular bell lower when dipped into water?
frequancy decrease damping due to viscosity
What instrument is blown and squeezed at the same time and it lives in Scotland?
The bagpipes
How do you play gamelan?
you play by using percussion damping stopping the instrument from going on and on and on.
What is geometric damping?
Geometric damping is also called radiation damping. It is defined as energy radiation into a surrounding medium. Damping is defined as energy dissipation property of structures and materials that are put through time-variable loading.
What is negative damping?
It is the opposite of normal damping (oscillation decreases), so in negative damping to get even bigger oscillation.
What happens to the damping when the settling time increases in a derivative error compensation?
increase
What is order instrument?
A second order linear instrument has an output which is given by a non-homogeneous second order linear differential equationd2y(t)/dt2 + 2.rho.omega.dy(t)/dt + omega2.y(t) = K.omega2.x(t),where rho is a constant, called the damping factorof the instrument, and omega is a constant called the natural frequency of the instrument.Under a static input a second order linear instrument tends to oscillate about its position of equilibrium. The natural frequency of the instrument is the frequency of these oscillations.Friction in the instrument opposes these oscillations with a strength proportional to the rate of change of the output. The damping factor is a measure of this opposition to the oscillations.An example of a second order linear instrument is a galvanometer which measures an electrical current by the torque on a coil carrying the current in a magnetic field. The rotation of the coil is opposed by a spring. The strength of the spring and the moment of inertia of the coil determine the natural frequency of the instrument. The damping of the oscillations is by mechanical friction and electrical eddy currents.Another example of a second order linear instrument is a U-tube manometer for measuring pressure differences. The liquid in the U-tube tends to oscillate from side to side in the tube with a frequency determined by the weight of the liquid. The damping factor is determined by viscosity in the liquid and friction between the liquid and the sides of the tube.
How is light damping achieved?
The amplitude of resonant oscillations can be reduced by damping.Light damping reduces oscillations slowly.Heavy damping reduces oscillations quickly.Critical damping stops the oscillation within one cycle.The graph above shows light damping.
Applications of critical damping?
critical damping is when the amount of damping is large enough for the system to return toequilibrium as fast as possible without performing oscillations. Hope thatHELPED
What is the definition of viscous damping and viscous damping coefficient especially in Civil Engineering.?
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What is damping level?
In the damping level the level view and vertical spindle are crossed together...
What is second order instrument?
secondary instruments,as opposed to absolute instruments ,are direct reading type instruments.the value of an electrical quantity can be read directly from the deflection shown on the instruments.deflections on an un-calibrated secondary instrument are not a true measure of the electrical quantites.
How does surface area affect damping of an oscillation?
The larger the surface area, the larger the damping of an oscillation
Why is sharpness of resonance inversely proportional to the damping force?
the further the frequency from the resonant one, greater would be the damping effect, hence greater the sharpness the lowre is the damping effect
