If you are unsure about the voltage you need to test is in AC or DC voltage, which setting on the meter should you start with?

Q: QUESTION 3 The abbreviations NO and NC represent Normally Open and Normally Closed when used to…

A: Switches: Switch is a most common used electronic device. A electrical switch can normally connect…

Q: If a meter is in the 3V range with an accuracy of 2.5%, what is the possible voltage range?

A:

Q: what are three safety items to consider when using a voltage tester on energized circuits

A: Measuring live voltage in energized circuit can cause severe hazard to equipment and users if…

Q: Explain why multimeters are designed to draw a limited amount of current

A: A multimeter is an electronic measuring instrument that can measure- Voltage Current Resistance…

Q: What does it mean if a power supply exhibits 2% voltage regulation?

A: - Every power supply is rated with certain specified voltage level. - Regulation denotes the…

Q: The suitability of using a multi-meter to measure current, voltage and resistance.

A:

Q: 5. What will this voltmeter register when connected to a battery as shown (assume a battery voltage…

A: Given circuit diagram:

Q: What is different cost of electrical energy?

A: In real world nothing comes for free, everything has their own cost to produce or use it. Similarly,…

Q: Technician A says that an open causes unwanted voltage drops. Technician B says that high-resistance…

A:

Q: How is an ammeter connected into a circuit

A: An ammeter is an apparatus which is used to compute current in the circuit. An ammeter has a fixed…

Q: Assume the voltmeter is being used on its 10 volt rangem and the meters resistance on that range is…

A:

Q: what are devices helps prevent electrical fires before they happen? like "ting"

A: Electrical fire prevention devices: They are the smart devices which are connected through the…

Q: A 600 V, 200 amp, class H fuse will fit into the same fuse holder as a 600 V 225 amp class H fuse…

A: Given A 600 V, 200 amp, class H fuse will fit into the same fuse holder as a 600 V 225 amp class H…

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.