i. The reactance of pressure coil circuit of a dynamometer type wattmeter is 1.2 % of its resistance. What is the percentageerror and correction factor due to this cause at a power factor of 0.45 lagging?ii. The two-wattmeter method produces wattmeter readings P1 = 1050 W and P2 = 2100 W when connected to a deltaconnected load. If the line voltage is 220 V, calculate: (a) the per-phase average power, (b) the per-phase reactive power, (c) thepower factor.

Answered: a power factor of 0.45 lagging?

Engineering

Electrical Engineering

a power factor of 0.45 lagging?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

See similar textbooks

Related questions

Q: Find the probability that, in the next 18 samples, exactly 2 contain the pollutant. (Use 4 significa...

Q: Show how you solve the equation

A: The given circuit diagram is shown below,

Q: An abrupt pn junction, a diode, is fabricated using 1017 acceptor atoms cm-3 on the p side and 10^15...

A: An abrupt pn junction, a diode, is fabricated using 1017 acceptor atoms cm-3 on thep side and 1015 d...

Q: If you make a circuit with R1 6 KOhm and R2 = 9 KOhm, and your %3D %3D UIN UOUT GND

A: Solution

Q: 10.31 a) Find the average power dissipated in the line in Fig. PI0.31. b) Find the capacitive reacta...

Q: I Design a CS amplifier using E-MOSFET with voltage gain 6 , Vas-6V (gm=4500µS).

A: Since you have asked multiple question ,we will slove the first question for you .If you want any sp...

Q: Show how a five bit 11011 binary number can illustrated in the five-bit serial in –parallel out shif...

Q: 7-20 The baseband signal of Problem 7-18 is used to phase modulate a high-frequency carrier, and max...

Q: S) The following 10 observations were received in the case of an ammeter: 41.7, 41.8, 42, 42, 42.1, ...

Q: How many 10-kilo-ohm resistors should you connect in parallel to get an equivalent resistance of 1.2...

Q: 2,4 kfl 40 mAt)2.7k13 33 kng C0.5 uF The switch in the circuit of Fig. p7.22 has been in the positio...

Q: For the diodes, use the models shown below; the regular diode model has 0.7V forward bias voltage; t...

A: It is given that: Vf=0.7 voltVZ=-3 volt

Q: Q1) For the circuit shown in Figure 1 L=10 mH R=100 0 C=100 µF i. Calculate i(t) if the frequency va...

A: RLC circuit A Resistor, capacitor, and inductor are connected in series between an alternating supp...

Q: Using branch current method, solve

A: This question belongs to circuit theory . It is based on the calculation of current in the circuit b...

Q: Problem: Consider the following canonical form of a Boolean function F(W,X,Y,Z) F(W,X,Y,Z)=E(1,3,4,5...

Q: Determine the total charge transferred over the time interval of 0 < t< 9 seconds whet i(t) = (1/2) ...

A: This question belongs to circuit theory . It is based on the concept of relation between charge and ...

Q: For the given circuit diagram a) Calculate I, I4, I6 ve I10 currents. b) Calculate the voltage drops...

A: Given circuit:

Q: Consider the following system: F k1 Construct the transfer function X(s)/F(s) and state space model ...

Q: Find the inverse Laplace transform of the following: s+3 F(s) %3D (s + 1)(s+2)

A: This question belongs to signal and system . It is based on the concept of calculation of inverse La...

Q: following

A: Solution A Bridge Full wave rectifier is a circuit arrangement which makes use of both half cycles ...

Q: 1. Use Kirchhoff's Laws to find the branch curents indicated in the following networks: 2420'v a 50 ...

Q: A capacitor with length L= 1 cm as shown i

Q: I.W1 For the following inputs, sketch the O/P of the following gate 1. AND, 2. OR, 3. NAND, 4) Not f...

Q: DIRECTIONS. Study the diagram showing the placement of electronic components. Based on the letter or...

A: Schematic symbol It represents several components such as resistors, capacitors, inductors, transist...

Q: A ww ww ww ww ww ww B ww ww ww www

A: Solve this circuit using the concept of symmetricity.

Q: R= 0.15 * 40 = 62 tor Yo km -3. XL=(27FL)* Yo = 2 (3,14) Cho) (l;3263x16) C40) XL 2on for 40 km 2: R...

A: In the given question the receiving end power is calculated by the formula: P=Scosθ Once we get its ...

Q: In the circuit of the figure 8 = 3.93 kV, C= 9.60 µF, R1 = R2 = Rg = 0.930 MO. With C completely unc...

A: Transient analysis of capacitor and inductor When a voltage is applied across a capacitor initially ...

Q: The PDN of a CMOS Logic Gate is shown below QI A Y Q4 Q2 B- Q3 В Qs If L=0.25µm design W for Q1, Q2,...

Q: Answer the follwing. Modified true or false. Write True if the statement is true. If not, write fals...

Q: Calculate E at point P(2,-3,6) produced by a point charge QA = 55 mC at Q(-2,3,-6); a uniform line c...

Q: 1. Calculate the current for a 3v battery and a 1.5 kilo ohm resistor. Then, calculate the silicon v...

Q: 31 a) Find the average power dissipated in the line in Fig. P10.31. b) Find the capacitive reactance...

Q: Solve for the Laplace transform of sint sin 2t cost OF s(s?+16) 4(s +16) 4s 4(s?+16) 2s(s2+16)

Q: A three-phase asynchronous motor has the following rated data: Voltage 230V, output power 10kW, effi...

Q: A rectangular waveguide has a dimension of (3X2) cm is used to transmit a signal of 9 GHz. Determine...

A: Given: A rectangular wave-guide used in dominant mode. Dimensions, a=3 cm and b=2 cm Frequency, f=9 ...

Q: There are 6 × 10 small picture elements in a video each having 8 distinguishable 4 equiprobable leve...

A: Given Data : Number of picture elements = 60 Number of levels = 4×8 = 32 Rate of frames= 20/s Bandwi...

Q: It is the other term for a block diagram since it identifies the basic functioning module of the ent...

A: Control systems are represented by transfer function. This can be written in both time domain and s...

Q: An electrical device has a resistance of 30 Q and is supplied with a 5-ampere constant current sourc...

Q: ollutant. (Use 4 significant figures.) * Each sample of water has a 10% chance of containing a parti...

A: Here,The probability of containing the particular organic pollutant is,P=10%Samples, n=18Pollutant, ...

Q: Problem 14.1. Find the DTFTS of the following sequences: (a). ¤(n) = sin(in)

Q: Two resistors, R1 = 100 N and R2 = 200 Q are connected in series, if the voltage across R2 is 20 V, ...

A: Given Data Resistance R1=100ohms Resistance R2=200ohms Voltage drop across R2=20volts Current=voltag...

Q: 1. Find the value of R if vo = 3V %3D 20 k 02 mA ww 25 L

A: The solution is given below

Q: z[n]=output

Q: Find the voltage in the z axis of a structure centered in the origin. The electric field of this str...

A: The solution is given below

Q: Calculate the efficiency of a silicon-based solar cell having short circuit current density of Jsc =...

A: Given data, Short circuit current density Jsc=42.2 mA/cm2 Open circuit voltage Voc=706 mV Fill facto...

Q: 4. Given the electric circuit of figure 4 where v(t) is a small signal source. i(n) 1 H Nonlinear re...

Q: 6) Th ree resistors R1, R2, and R3 have the following values. R1 = 2002±5%, R2 = 1002+5%, R3 = 50 Q±...

Q: C2 6. Figure shows a series resistance-capacitance bridge to R1 measure the capacitor, C3 and its le...

Q: An AC ammeter has a direct reading 0-600A scale when used with a 400:5 ratio current transformer. Th...

A: In this question, We need to determine the ammeter reading when the actual current is 9 A. If curre...

Q: (c) Determine with justification whether each of the following functions R →R is one-to-one, onto or...

A: The solution is given below

Concept explainers

Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.

Question

i. The reactance of pressure coil circuit of a dynamometer type wattmeter is 1.2 % of its resistance. What is the percentage
error and correction factor due to this cause at a power factor of 0.45 lagging?
ii. The two-wattmeter method produces wattmeter readings P1 = 1050 W and P2 = 2100 W when connected to a delta
connected load. If the line voltage is 220 V, calculate: (a) the per-phase average power, (b) the per-phase reactive power, (c) the
power factor.

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

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

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

8 = 0 Q1: What does happen if we change two currents? Q2: What does happen if we have a three-phase four poles machine? a Q3: What does happen if we have a two-phase two poles machine? Q4: What does happen if we apply a capacitance in phase b and then use same voltage for both phase. Dr. Ali K....p. . --
1. A3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is I-5 S/phase and synchronous reactance is 300/phase. To what value will the terminal voltage rise when full-load at p.f. 0-8 lagging is switched off? [13970 V]
If you have 3-phase power and you need to step down (or up) in 3-phase voltage, how many single-phase transformers are needed? Explain.
Please solve the problem and show the circuit diagram. Thank you. 3. A 5 MVA, 13.2 kv, 3-phase wye-connected alternator has an effective resistance of 0.8 ohm and a reactance of 15 ohms per phase. It delivers full-load current at 0.707 lagging power factor at rated voltage. What will be the terminal voltage for the same excitation and load current, if the power factor is 0.6 leading?
The reactance of a generator is given as 0.1 pu based on the generator of 17 KV, 300 MVA. Determine the pu reactance on a base of 17 KV, 250 MVA. New pu reactance is.......
50. A series resistance-capacitance (R-C) circuit is connected to 230-volt, 50 cycle AC source. The current through the resistor is 45.45 A and the power taken by the circuit is 5,000 watts. Compute the following: a. Ohmic value of the resistor b. Capacitive reactance E. capacitance in microfarad
Explain the concept of power quality and the impact of voltage sags, harmonics, and other issues on electrical equipment.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
The dc armature resistance of delta-connected alternator measured across its two terminal is 0.8 ohm. The effective resistance per phase is?
In the system shown in Figure 1, the transformers are connected star-star with both star points grounded and the generators are connected in star with thier star points grounded. The system base is 15 MVA. The transformers all have reactances of 0.04 p.u. on this 15 MVA base. The reactances of all other elements are given in Table 1 (in 2) and the voltage levels are given in Table 2. p.u. G1 p.u. T1 jö Per-Unit Convert all values to p.u. on a 15 MVA base. Xa= p.u. Xc₂= XL = V BABE G1 2 X 9 T3 Figure 1: A section of the distribution system T1 L Table 1: Sequence reactances (2) 3 G1 L G2 0.3 0.59 0.01 4 L 9/10 10 Fault Voltage What is the voltage at bus 3 (in Volts) after the fault has occurred? Vp= V T2 5 T2 34 10/4 Table 2: Voltage bases (kV) G2 4 T3 10/9 | G2 Fault Current A three-phase fault with a fault reactance of 0.01 p.u. occurs at bus 3. Calculate the fault current flowing at the fault point in KA. Ip=-j KA So
7. A 3-phase, Y-connected. 2-pole alternator runs at 3,600 r.p.m. If there are 500 conductors per phase in series on the armature winding and the sinusoidal flux per pole is 0.1 Wb. calculate the magnitude and frequency of the generated voltage from first principles. [60 Hz; 11.5 kV]
I need answer in 30 minutes else it's no meaning A 3-phase, 20 MVA, 10 kV alternator has internal reactance of 5% and negligible resistance. Find the external reactance per phase to be connected in series with the alternator so that steady current on short-circuit does not exceed 8 times the full load current.