Advantages of Gravity Control | disadvantages of Gravity Control
This page covers advantages and disadvantages of Gravity Control. It mentions Gravity Control advantages or benefits and Gravity Control disadvantages or drawbacks.
What is Gravity Control?
Introduction:
• In this method, a small adjustable weight (W) is attached to the spindle.
• The controlling torque can be varied by changing the position of the weight on the arm.
• In zero position of the pointer, the control weight hangs vertically downwards and hence it does not provide torque.
• Under deflecting torque, the pointer moves from zero position and control weight moves in opposite
direction.
• Due to gravity the control weight would try to come to its original position and would produce a torque.
• The controlling torque as produced opposes the deflecting torque.
• The pointer comes to rest at a position where two torques are equal and opposite.
Benefits or advantages of Gravity Control
Following are the benefits or advantages of Gravity Control:
➨It is very cheap.
➨Method is very simple.
➨It is unaffected by change of temperature.
➨Controlling torque can be easily varied.
➨It is not subjected to fatigue or distortion with time.
Drawbacks or disadvantages of Gravity Control
Following are the drawbacks or disadvantages of Gravity Control:
➨Instrument has to be kept in vertical position only.
➨The scale of the instrument is not uniform.
➨The weight of the moving system is high.
Advantages and Disadvantages of other equipments, meters or devices
What is difference between or comparison between
Following links mention difference or comparison between various equipments and terms:
comparison between SPI and I2C
difference between PXI and PCI
Microscope vs Telescope
Amplitude Modulation vs Angle Modulation
difference between modem and router
Air Fuel Ratio Sensor vs O2 Sensor
Radiometer vs Spectrometer vs Spectroradiometer
Clamp meter vs digital multimeter
Colorimeter vs Spectrophotometer
difference between Prism and Grating
difference between Venturi meter and Orifice meter
difference between Lux and Lumens