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Time response of an indicating instrument is decided by which of the following systems ?
- a)Mechanical system provided by pivot and jewel bearing
- b)Controlling system
- c)Deflecting system
- d)Damping system
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Time response of an indicating instrument is decided by which of the f...
Damping System Determines Time Response of an Indicating Instrument
An indicating instrument is a measuring device that indicates the value of the quantity being measured. The time response of an indicating instrument refers to the time taken by the instrument to reach its final value after a change in the measured quantity. The time response depends on various factors, such as the mechanical system, controlling system, deflecting system, and damping system.
Damping System
The damping system is responsible for controlling the oscillations of the indicating instrument and bringing it to a steady-state quickly. It consists of a damping torque or force that opposes the motion of the pointer. The damping system prevents the pointer from overshooting and oscillating around the final value, which can result in errors in the measurement. The damping system also reduces the settling time of the instrument, which is the time taken by the pointer to reach within a certain percentage of the final value.
The damping system can be mechanical or electrical. In a mechanical damping system, a fluid, such as oil or air, is used to provide resistance to the motion of the pointer. The fluid viscosity and the geometry of the damping mechanism determine the damping torque. In an electrical damping system, a resistor or a capacitor is used to provide a damping voltage or current, respectively, to the coil of the indicating instrument.
Conclusion
Therefore, it can be concluded that the time response of an indicating instrument is determined by the damping system. A well-designed damping system can improve the accuracy and reliability of the measurement by reducing the settling time and preventing oscillations of the pointer.
An indicating instrument is a measuring device that indicates the value of the quantity being measured. The time response of an indicating instrument refers to the time taken by the instrument to reach its final value after a change in the measured quantity. The time response depends on various factors, such as the mechanical system, controlling system, deflecting system, and damping system.
Damping System
The damping system is responsible for controlling the oscillations of the indicating instrument and bringing it to a steady-state quickly. It consists of a damping torque or force that opposes the motion of the pointer. The damping system prevents the pointer from overshooting and oscillating around the final value, which can result in errors in the measurement. The damping system also reduces the settling time of the instrument, which is the time taken by the pointer to reach within a certain percentage of the final value.
The damping system can be mechanical or electrical. In a mechanical damping system, a fluid, such as oil or air, is used to provide resistance to the motion of the pointer. The fluid viscosity and the geometry of the damping mechanism determine the damping torque. In an electrical damping system, a resistor or a capacitor is used to provide a damping voltage or current, respectively, to the coil of the indicating instrument.
Conclusion
Therefore, it can be concluded that the time response of an indicating instrument is determined by the damping system. A well-designed damping system can improve the accuracy and reliability of the measurement by reducing the settling time and preventing oscillations of the pointer.
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Community Answer
Time response of an indicating instrument is decided by which of the f...
Because the pointer will make oscillations after reaching the final value with decreasing amplitude hence, it's difficult to make quick and accurate readings. so how fast the oscillations can be reduced decides the time of response of the instrument.
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Time response of an indicating instrument is decided by which of the following systems ?a)Mechanical system provided by pivot and jewel bearingb)Controlling systemc)Deflecting systemd)Damping systemCorrect answer is option 'D'. Can you explain this answer?
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