A lamp filament is to have its resistance measured by the voltmeter/ammetermethod. The test voltage is 120 V while the voltmeter and ammeter resistancesare 1500 N and 0.08 2 respectively. If when connected long-shunt the ammeterreads 0.125 A, determine the percentage error of the apparent resistancemeasurement when the circuit is connected:6(a) long-shunt(b) short-shunt.

In this question, Determine the percentage error? If circuit is connected long shunt and short…

6 A lamp filament is to have its resistance measured by the voltmeter/ammeter method. The test voltage is 120 V while the voltmeter and ammeter resistances are 1500 2 and 0.08 2 respectively. If when connected long-shunt the ammeter reads 0.125 A, determine the percentage error of the apparent resistance measurement when the circuit is connected: (a) long-shunt (b) short-shunt

6 A lamp filament is to have its resistance measured by the voltmeter/ammeter method. The test voltage is 120 V while the voltmeter and ammeter resistances are 1500 2 and 0.08 2 respectively. If when connected long-shunt the ammeter reads 0.125 A, determine the percentage error of the apparent resistance measurement when the circuit is connected: (a) long-shunt (b) short-shunt

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

See similar textbooks

Similar questions

You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.
1. What is the relationship of voltage and current (concerning phase angle) in a pure resistive circuit?
Using the rules for parallel circuits and Ohmslaw, solve for the missing values. ETE1E2E3E4ITl1I2l33.2AI4RT3.582R116R210R3R420PTP1P2P3P4
a) Explain the construction of LVDT. Identify some suitable examples according to their applications b) Discuss contacting and non-contacting tachometers Note question is taken from instrumentation and measurements course
use these two images to answer all these questions: What are the differences between ac and dc meters? Can you compare the value of the current in the load resistance for the same value of voltage with ac and dc supply? What is the function of the autotransformer in this circuit? Can you use an autotransformer to obtain variable output voltage from a fixed dc supply? What will happen if dc meters are used instead of ac meters in this circuit? What the difference between resistance and impedance is when referred to dc and ac measurements?
Determine the equivalent resistances seen at the terminals.
Elaborate the role of Multimeter in Electrical Engineering field, justify your answer with practical examples.
In a design task, a wire of 2000 m requires to exhibit a voltage drop of 2.5 Vwhen 3.2 A of current passes though it. Based on the Table Q1 (b) below, inyour opinion, which of the wire is the most suitable for aviation when the fuelsaving is another factor to be considered as well.
Given circuit, if the ideal ammeter and voltmeter are connected at the same time, what are the values measured by a. I1=? b. I2=? c. Vm=?
A) Find the equivalent resistor of the circle between points a and b?B) If a constant voltage source (15V) is placed between points a and b, calculate a valueCurrent iS
A power plant produces 1000MW to supply a city 40km away. Current flows from the power plant on a single wire with resistance through the city and returns via the ground, with negligible resistance. At the power plant the voltage between wire and ground is 115 kV. Determine: (a) the current in the wire, and (b) the fraction of the power lost in transmission.
The student engineer of a campus radio station wishes to verify the effectiveness of the lightning rod on the antenna mast (as shown). The unknown resistance Rx is between points C and E. Point E is a true ground, but it is inaccessible for direct measurement because this stratum is several meters below the Earth’s surface. Two identical rods are driven into the ground at A and B, introducing an unknown resistance Ry. The procedure is as follows. Measure resistance R1 between points A and B, then connect A and B with a heavy conducting wire and measure resistance R2 between points A and C. (a) Derive an equation for Rx in terms of the observable resistances, R1 and R2. (b) A satisfactory ground resistance would be Rx < 2.00 Ω. Is the grounding of the station adequate if measurements give R1 = 13.0 Ω and R2 = 6.00 Ω? Explain.