ELTE 110, Lab 2, Page 9 Review Questions 1. resistance of the three lamps. The 25-watt lamp had the a. highest b. lowest 2. When measuring AC voltage with the analog multimeter the range should be set to a lower than expected range a higher than expected range C. any voltage range selection is ok a. b. The highest AC current that the analog multimeter can handle is this meter cannot be used to measure AC current. b. 10 mA 100 mA a. C. d. 500 mA e. 10 A The zero ohm adjust knob is used to a. set the pointer to infinity resistance on the scale b. set the pointer to zero resistance on the scale set the pointer to zero for all types of readings 4. С. To measure AC voltage with the digital multimeter a. make sure you are set to the correct range (0-250v) b. zero the meter first set the function switch to V С. 6. If the amperage readings register very low on the Amprobe clamp-around meter or the Fluke T5 a. record the reading as this meter reads accurately at all positions of the scale. b. wrap a wire around the clamp several times and connect in series with the load, divide reading by number of turns. c. nothing can be recorded about this current reading As used in this lab, the digital multimeter gave a Amprobe clamp-around meter. accurate reading than the a. more b. less about the same C. 3. 5.

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

A:

Q: List 5 examples of devices using DC Voltage and 5 examples of devices using AC Voltage. Don't give…

A: The device using the DC voltage has a constant supply voltage. The example of these devices are…

Q: If a small power system has a  base power of 5.0 MVA and base current is 1000 A, the base voltage…

A: Given: Base power =5MVA Base current= 1000 Formula used: P=VI

Q: What is the purpose of shunt resistors in an ammeter? A. To shorten the range of the ammeter. B.…

A:

Q: What is the correct way to measure current in a completed circuit using a DMM? O Connected in series…

A: MultimeterThis type of meter is used for the measurement of electrical characteristics. It can…

Q: None

A: Batteries are essential for storing electrical energy, and different types cater to various needs…

Q: What will be the total negative charge when an assembly of 123 electrons are present? Show detailed…

A: Electrons are negatively charged particles and the charge of a single electron is  In this case,…

Q: is the only metal that has relative conductance greater than 1?

A: In this question , we have to write about only metal that has relative conductance greater than 1 ..

Q: An assembly consists of electrons and total charge of electrons is -5C. What will be total mass of…

A: Electrons are negatively charged particle and charge of a single electron is given as

Q: (а) (b) (e) (d) (c)

A: for this question we can easily answer.

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.