What is Ultrasonic Flow Meter? Working Principle, Diagram, Construction & Advantages
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Electrical Instruments & Measurement
What is Earth Tester? Working Principle, Construction, Diagram & Measurement Procedure
Earth Tester generally used for measurement of earth resistance. Figure 1: Earth Tester.
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What is Synchroscope? Working, Construction, Diagram & Applications
Synchroscope instrument is used for synchronization process. i.e. Connecting 3 phase alternator for parallel operation. Necessity of Synchroscope In power system, the 3 phase alternators, transformers are connected in parallel with system. When 3 phase alternator are connected to the line or system, the correct instant of connecting it to the system is important. That
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What is Ohmmeter? Construction, Circuit Diagram, Types & Working
Ohmmeter is used to directly measure resistance of a device, element, circuit or any portion thereof. This meter is used to determine approximate (not too accurate) resistance of the circuit components. It can be used to measure the resistance of heating element of heater, electric iron, field coil resistance, sorting resistors used in electronics circuits. It can also
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What is Constant Voltage Transformer (CVT)? Working Principle, Diagram & Applications
A constant voltage transformer (CVT) works on ferro-resonant principle. The variation in the primary flux with an unsaturated iron core does not affect the secondary flux with saturated iron core. Thus, the secondary induced voltage remains relatively independent of the voltage impressed upon the primary winding. Fig. 1: Constant Voltage Transformer (CVT).
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What is Fibre Optic Cable? Theory, Construction, Advantages & Disadvantages
Fibre Optic Cable carry light signals instead of the electric signals. They are used for light and infrared transmissions. Fig. 1: Construction of Fibre Optic Cable.
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What is Hot Wire Anemometer? Working, Advantages & Applications
Hot Wire Anemometer (or Thermal Flow Meter) makes use of temperature coefficient effect i.e. the resistance of conducting material changes with change in temperature. Fig. 1 : Hot wire anemometer.
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What is Vapour Pressure Thermometer? Working, Construction, Diagram & Applications
In Vapour Pressure Thermometers, a filling substance may be liquid, gas or vapour. Vapour pressure thermometer falls in the category of filled system thermometer. Working and Construction of Vapour Pressure Thermometer Figure 1: Vapour Pressure Thermometer.
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What is Weston Type Frequency Meter? Construction, Working & Diagram
Construction of Weston Type Frequency Meter The construction and connection diagram of the Weston type frequency meter is shown in the Figure 1. It consists of two coils, coil-1 and coil-2 (each divided into two parts) which are placed perpendicular to each other. Figure (1): Weston Type Frequency Meter.
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