Construction, Operation Principle, Equivalent Circuit Diagram, Characteristics, Advantages, Applications
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
Instrument transformer is used for the measurement of voltage, current, power and energy. Measuring instruments are used along with transformer operation is called Instrument transformer.
Construction, Operation Principle, Diagram, Torque equation, Error, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
Energy is the total power consumed or delivered over a period of time.Energy = power × time
Construction, Operation Principle, Diagram, Torque equation, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
Single phase power is measured by wattmeter. It gives the direct indication of power. It also takes account on the power factor.
Operation Principle, Circuit, Waveform Diagram, Error
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
This instruments are used for the measurement of AC current and voltage. This uses rectifier element and a PMMC meter.
Construction, Operation Principle, Diagram, Torque equation, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
This instrument is used for both AC and DC measurement. This instrument has high resistance, so draws less current from the circuit and the force generated will be small.
Construction, Operation Principle, Diagram, Torque equation, Error, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
It is used for the measurement of both AC and DC.It gives very accurate output about 50MHZ.It consist of two parts1. Thermoelectric element and 2. indicating instrument.
Construction, Operation Principle, Diagram, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
It is used for the measurement of current at high frequencies i.e. above the frequency range of MI and electrodynamometer Instrument.
Types, Construction, Operation Principle, Diagram, Torque equation, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
This instrument can be used for the measurement of voltage current and with some modification it can be used for the measurement of power factor and frequency.
Construction, Operation Principle, Types, Diagram, Torque equation, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
It is the commonly used, accurate instrument for both AC and DC measurement. It is divided into two types 1. attraction type and 2. Repulsion type.
Construction, Operation Principle, Diagram, Torque equation, Advantages, Disadvantage
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
It is used only for the measurement of DC.It consist of 'U' shaped permanent magnet, Aluminium former is placed in the gap between the poles.
Measurements and Instrumentation
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
The standard is the physical representation of the unit, standard is applied to an instrument having a known measure of physical quantity.
Subject and UNIT: Basic Electrical and Electronics Engineering: Unit V: Measurements and Instrumentation
Primary sensing element senses the parameters from the measuring medium and given its output to the variable conversion element.