Answered: A wattmeter reads 25.34 watts. The…

Engineering

Electrical Engineering

A wattmeter reads 25.34 watts. The absolute error in the measurement is -0.11 watt. Determine the true value of power.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 30RQ: True or False: Ohms law applies to all types of electrical circuits.

See similar textbooks

Related questions

Q: 3.⁠ ⁠Given a 4-bit adder, how do you use it to design a subtractor? Give your design and explain it.

A: The objective of the question is to understand how to design a subtractor using a 4-bit adder. This…

Q: K(s+12) (s+14) (s+16) A unity feedback system has the following forward transfer function G(s) the…

A: Given forward transfer function Unity feedbackAsked to find the K value for steady state error is…

Q: Example 5.1: (a) Estimate BFM and BPM for the modulating signal m(t) for k= 2x105 and kp = 5ñ . (b)…

A: (a)we need to determine BFM and BPM for the modulating signal m(t) for kf =2*pi*10^5 and. kp=5*pi…

Q: Q7) A resonant circuit has a peak output voltage of 6.6 mV. What is the voltage output at the upper…

Q: Calculate the ripple factor in a half-wave combiner circuit and the value of the output frequency,…

Q: A single phase 230 V, 1 kW heater is connected across single phase 230 V, 50 Hz supply through a…

A: Given data:Required information:

Q: An emf source with ε = 120V, a resistor with R = 80.092, and a capacitor with C = 4.00uF are…

A: Given data:Required information:

Q: Determine the following for the circuit below: (a) The impedance and the supply current (b) The…

A: Given:A circuit, with, we need to find:(a) The impedance and the supply current(b) The voltages…

Q: In the figure below, suppose the switch has been closed for a time interval sufficiently long for…

A: A capacitor is an electronic component that stores electrical energy in an electric field. It…

Q: Determine the h parameters for the circuit in Fig. 19.24. 3Ω ww 292 Figure 19.24 592

A: The given circuit isWe need to determine the h-parameters for the circuit.

Q: Athin spherical shell of radius R has a total positive charge Qdistributed uniformly over its…

Q: root locus

Q: 3. Show the value of all bits of a 2-byte that hold the number equivalent to (139) 10

A: given a number and asked to represent it in 2 byte size.

Q: Q3A- find the energy of the right side signal: x(t)=Ae-²¹ u(t) Q3B- fine the power of the x(t)=…

A: To determine:energy of one-sided signal x(t)=Ae−2tu(t),power of periodic signal x(t)=8cos(50t+π2).

Q: Q4. What is the minimum number of NAND gates required to implemen A+A B+ABC? (a) 0 (b) 1 (c) 4 (d) 7

A: Given data:Required information:Minimum number of NAND gates required to implement the given…

Q: A 200 V, 10 A, 1000 rpm, separately excited d.c. motor has an armature resistance of 3 Q. The motor…

A: Given data:Required information:The value of the duty cycle of the chopper.

Q: Q4) An annular disk of inner radius(1cm) and outer radius (2cm) is placed on the xy-plane and…

Q: Electromechanical energy conversion 5HP on the plate of the DC shunt motor. It says 200 V. The…

A: Motor output Motor efficiency Supply voltage No load speed No load line current starting line…

Q: Determine the total output voltage across the load resistor (R₁) in the following circuit at room…

Q: Q3A- find the energy of the right side signal: x(t)=Ae-²¹ u(t) Q3B- fine the power of the x(t)=…

A: To determine:energy of one-sided signal x(t)=Ae−2tu(t),power of periodic signal x(t)=8cos(50t+π2).

Q: A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3s. The symmetrical breaking…

A: Given data:Required information:symmetrical breaking current =?

Q: 7. Draw the circuit diagram of a 3-bit by 3-bit array multiplier using 1-bit full adder units and…

Q: Q4: The propagation of sky waves above the spherical earth represented by the Figure Imaginary…

A: To prove:The incidence angle at point P is:θ=sin−1(roro+h)

Q: 2- Use superposition to obtain vx in the circuit of Figure below. 90 V 30 12 www 102 www Vx 60 52 6…

A: Given circuit,Asked to find the vx using the Superposition theorem.There are three active energy…

Q: Question 2: Do as required: A) (100110)2 = (?)10 B) (38)10 (?)16 C) (26)16 (?)10 = = (11000)2 = (?)…

A: In the given questions we need to solve the following number system problem.

Q: A parabolic reflector antenna having antenna efficiency 75% is designed for 3 GHz resonant frequency…

A: The objective of the question is to find the diameter of a parabolic reflector antenna given the…

Q: Q2) What is the range of output voltage in the circuit below 20KO V1=+25mV- V2=-20 mV. 15 KQ 30 ко…

A: given circuit,Asked to find the output voltage Vo.

Q: Given two functions x(t) and h(t) as follows. Find y(t) = x(t)*h(t). h(t) -1 x(t) 0 -1 0 1

A: Given:we need to compute the convolution of x(t) and h(t).

Q: Shown in the following table are the 15 min kW demands for two customers between the hours of 17:00…

A: Since you have posted the multiple questions with multiple support. So we are supposed to answer 1st…

Q: Q3A- find the energy of the right side signal: x(t)=Ae ²¹ u(t) Q3B- fine the power of the x(t)=…

A: To determine:energy of one-sided signal x(t)=Ae−2tu(t),power of periodic signal x(t)=8cos(50t+π2).

Q: Q11) What are the sources of quantization noise in PCM? Give clarification for your answer!

A: According to the question, we need to explain the source of quantization noise in PCM.

Q: (1) In the circuit below, the two meters are digital multimeters (DMMs), with one set to the ammeter…

Q: A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line…

A: Given data:Required information:

Q: Q1/ Find Laplace Transformation for: 2 1. f(t) = t + sinyt + 3 e 2- f(t) = Sin²t

Q: Q1/ Find Laplace Transformation for: 2 1. f(t) = t ²+ sin yt +3² t e 2- f(t) = Sin²t

Q: 1. Using graphical method, compute the convolution integral y(t) = x(t) h(t) for the pair of signals…

A: Given:we need to compute: the convolution of of x(t) and h(t).

Q: What is the DC gain of the given circuit above?

A: The transfer function from the solution is, Asked to find the D.C. gain of the circuit.

Q: Synchronous Motor taking a 40 kW is working in parallel with a load of 80 kW having a power factor…

A: The motor is taking real power of kW.Load is absorbing a real power of kW.The power factor of the…

Q: Q1: A position vector has a length of 40 m and is at an angle of 57° above the x- axis. Find the…

Q: For the transfer functions given in the control system in the figure, find the relevant E(s) steady…

A: The given block diagram is shown below.Here ..Note: Since the type of input is not mentioned, so we…

Q: Current and voltages???

A: Given data:Required information:

Q: 11 What is V? A) 4.0V B) 1.8V C) 2.2V D) 3.3V E) none of the above. 10V 1092 2092 1092 2092 V

A: Given:A circuit, we need to find:the value of voltage v.

Q: 1. Convert the following decimal numbers to the bases indicated: 46 to binary; 104 to binary; 98 to…

A: given decimal number and asked to convert then into binary.

Q: (b) Differentiate between single phase and three phase alternating current (A.C) supply for the…

A: Single Phase:Generated by a single rotating coil in a magnetic field.The coil cuts the magnetic…

Q: Problem 4) Find the Thévenin equivalent circuit with respect to the terminals a, b of the circuit…

A: For the value of Vth: -

Q: With switch SW1 closed, complete the following using the values from the table:i. Determine the…

A: The objective of the question is to determine the total resistance, currents, voltage drops in the…

Q: 1. Answer the following question Find the current through the load resistor R in the two-generator…

A: Note: We are allowed to solve one question at a time. so providing you the solution of first…

Q: The dynamic part of the state space representation of the following circuit with R₁ = 20 R₂20 L₁ =…

Q: Q1: Design a Time Division Multiplexing system (Tx & Rx) for three signals X₁(t), X2(t), and X3(t)…

A: Given:Three signals x1(t), x2(t) and x3(t) having frequencies fm1= 4 KHz, fm2 = 8 KHz, fm3 =10 KHz…

Q: G(s) = V₁(s)/V(s), of the following electric circuit. 292 1F WHE v(t) 252 1 F TWE 292 2 H Lellem…

Concept explainers

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.

Question

A wattmeter reads 25.34 watts. The
absolute error in the measurement is
-0.11 watt. Determine the true value of
power.
A 25.23 watts
B-25.23 watts
C) -25.45 watts
D 25.45 watts

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data and Required information:

VIEW

Step 2: Calculation of true value of power:

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

9. In a circuit with a 12 volt supply and 4 2 resistance, the power consumed is 10. What is the unit of electrical power? A. Watt. B. Ampere. C. Ohm. D. Volt. 11. What is the electric power supplied by the battery shown in figure 01? A. 24 W ⠀⠀ B. 48 W C. 0.5 W D. 12 W 24V- 330 U 150 figure 01 watts.
Show that the average power absorbed by each resistor is P2Ω.=P4Ω.=7.20W.
Answer the following problems in a short/long bond paper size. Round off your answer up to 2 decimals, if applicable. Show your complete solution and box your final answer. You may not copy the problem. TwepanenDanected wattmetersare squre Current pOwer dre ederserrie two lagging balanenads The e .wl each is rePload e total KVA 3. Twe 4800 rpm. 60 HE elor OF e na2 phase IndustentoO m asured ba tuwe Mi m nod 220 and e Hnd a FrcSr of the 5. A 460 V, 3-phase motor draws 208A with a pf of 0.91 lagging. Find the readings of two wattmeters properly connected to measure the total power drawn by the motor.
The meter constant of a single phase 230 V induction watt hour meter is 400 rev/kWh. The speed of the meter disc for a current of 10 A of 0.9 pf lagging will be ?
9. In a circuit with a 12 volt supply and 4 resistance, the power consumed is 10. What is the unit of electrical power? A. Watt. B. Ampere. C. Ohm. D. Volt. 11. What is the electric power supplied by the battery shown in figure 01? A. 24 W B. 48 W C. 0.5 W D. 12 W 24V- 150 figure 01 3302 watts.
A DC generator is experimented by a load resistor as seen in the figure. The measured voltage and current values by the multimeters are as indicated in the table. Calculate EA and RA of the generator. The load I₂ EA DC generator RL (12) VL (V) 50 75.54 83.7 IL (A) 1.51 0
Find the effect of all sources on the 1 ohm
A rotary standard with a KH of 1/3 when per revolution and a multiplier of 3 makes 42.4 revolutions during the testing of a watthour meter with a Kh of 1.8 when per revolution. If the meter has two current coils connected in series makes 48 revolutions, what is percent registration of the meter under test? A. 79.5% B. 102% C. 119% D. 98.1%
9. In a circuit with a 12 volt supply and 4 resistance, the power consumed is 10. What is the unit of electrical power? A. Watt. B. Ampere. C. Ohm. D. Volt. 11. What is the electric power supplied by the battery shown in figure 01? A. 24 W ⠀⠀ B. 48 W C. 0.5 W D. 12 W 24V- 150 figure 01 330 watts.
How many watt-hours (W-h) is 150,000 J?
1.85 Pre-fault output power & Post-fault output power Shaft power Power during fault do! dce dm delta 180 Match the following questions with the correct answer Value of dm when shaft power is 0.9 p.u. Choose. Value of do when shaft power is 1.0 p.u. 29.109 deg output power (pu)
2. Calculate the power absorbed by each element. I-5A P2 12V ,6A 20 V P1 Ps SV P4 0.21 4. Determine the currents I and l 2A 7A 3A 4A