A 100 kVA, 220/440 V, 50 Hz power transformer is tested at 75 Hz to evaluate the core loss, while its HVS is open-circuited. The Most appropriate voltage that should be applied to the LVS is: a 440 V zenon 330 V 660 V 220 V

A 100 kVA, 220/440 V, 50 Hz power transformer is tested at 75 Hz to evaluate the core loss, while its HVS is open-circuited. The Most appropriate voltage that should be applied to the LVS is: a 440 V zenon 330 V 660 V 220 V

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 3.34MCQ: Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit...

See similar textbooks

Related questions

Q: An alternating voltage is represented by 'v' = 245 sin (134 t) volts. Find: (i) Time period (ii) Ave...

A: Given, Alternating voltage waveform is v(t) = 245 sin(134t) volts..........(1)

Q: 1. In the linear transformer circuit below, calculate the ff: a. Input impedance b. Current in prima...

Q: Using IC that is approximately equal to IE. Determine the value of R1in ohms, when VCC=19V, RC=217...

Q: v+ = +10V A, = -88.54 RC Cc Ay = -68.9 Rs = 2.5 k2 R =5 k2 A, = -90.46 RE mon A, = -33.27 %3D = -4V ...

Q: А. Suppose we replace the source vj with a DC voltage VI in series with a small time-varying voltage...

A: The circuit is given as iA=c2vA2+c1vA+c0-----1vA=vI-RiAvA=vi+VI-RiAVA+va=vi+VI-Ria+IA-----2

Q: realme shot on realme X7 Max Detormine he de power bacton of the cincol an y operbtion aumplib ier i...

A: It is given that: Input 1=V1=45 VInput 2=V2=35 VOpen loop gain=Ad=10

Q: EXERCISE : Q26) Figure below shows a circuit to generate Amplitude Modulation (AM) signal at a trans...

A: We need to find out amplitude of carrier signal and expression at different point.

Q: d.) Calculate the output voltage of an op-amp summing amplifier with the following values: Rf = 2MN ...

Q: Which of the following is an approved disconnecting means for a feeder or branch circuit supplying a...

A: The disconnecting means for a feeder or branch circuit supplying a separate building or structure is...

Q: A 3-phase generator delivers power to a 2400 KVA (total), 16KV (line-to-neutral) load h a lagging po...

Q: According to the Laws of Boolean Algebra, X+XZ =

Q: How does Ohm’s law relate to core concept of flow down gradients.

A: Please refer the attached images for the complete answer..

Q: Study the ladder logic program in figure below and answer the questions that follows: a) What type o...

A: Answer-

Q: b) Obtain the Fourier series coefficient of the signal x[n] shown in Figure Q3(b). x[n] 4 3 1 -5 -4 ...

A: As per company guidelines we are supposed to answer only one question. Kindly repost other questions...

Q: V* = 10V -0.99 mS Rg = 5kn Cc eR, -0.20 ms -0.87 ms RL = I k2 -0.50 mS -0.32 mS V =-8V Consider the ...

Q: Multitasking is defined as the ability to do many tasks at the same time.

A: Mutitasking is the abilty to do many tasks at the same time It means shifting between tasks is done ...

Q: The resonance frequency wo of the circuit shown below is.. rad/s 10 mH lle 0.5 mF 102 V cos ot O 320...

Q: What effect would the multimeter's internal resistance (in the voltage setting) have on the capacito...

A: The multimeter work to determine the capacitance by charging the known current. that measures the re...

Q: 3. A coil of 1000 turns is uniformly wound o a ring of non-magnetic material, the mean diameter bein...

Q: 80 Ω 40 N 50 V {50 0 | 750 mA §2000 Suppose we kill the 50V source, leaving only the 750 mA source. ...

A: The solution is given below

Q: Explain why there is a depletion region at the PN junction. B. Describe how a forward biased diode a...

Q: PROBLEM 4.I Consider the circuit containing a nonlinear element N as shown in Figure 4.54. The v-i r...

A: Note: We are authorized to answer three subparts at a time since you have not mentioned which part y...

Q: Problem 4 to separate ITU channel 59 using a fiber Bragg grating (FBG) and an optical circulator. Th...

A: Demultiplexer- It is a device which is used to dissociate various signal passing or received by a s...

Q: and potenti al B. Study the usage of breadboard in electronics. Given the symbol of resistor as diff...

A: Brief description : A resistor is an electrical element which is used to limit the amount of flow of...

Q: The unit of measuring the Permeans of an electro-magnetic circuit is: Henry/m zenon Henry m/Henry I/...

A: The solution is given below

Q: Example Question 1 A dynamometer-type AC ammeter made of moving coils and fixed coils with a shunt i...

A: For a dynamometer-type AC ammeter -The moving coil's resistance is,R=10ΩThe shunt resistance is,Rshu...

Q: What is the CMRR of the circuit? 60v 50v 1 1500v 2000v 20v 30v 2.

Q: L2 Tc T K, G3 G4 H2

A: GIVEN: a block diagram FIND: reduce the block diagram using matlab code

Q: . What is the CMRR of the given circuit? 100v 100v- 80600v 2 60700v 20v 40v Equations of Va and V, f...

Q: QUESTION 13 How many power consuming outlets may be installed on a 30 A, 120 V branch circuit in a c...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Two basic technics are-1 responsible for the development of the necessary hardware which are softwar...

A: Given , They are asking for the two basic techniques for the development of the necessary hardware.

Q: Using IC that is approximately equal to IE. Determine the value of R1in ohms, when VCC=20V, RC=123...

Q: Question 2 A circuit has a voltage of 5020 V and a current of 52-10 A. The angle of the circuit's im...

A: Given, Voltage, V=50∠0° V Current, I=5∠-10 A

Q: I need the answer quickly for 10 minutes In clear and understandable handwriting please

Q: A solenoid of length 25 cm carries a current of 10 A. If the field strength of the solenoid is 1,200...

Q: A three-phase induction motor with a double cage

A: Three Phase Induction machine- This Induction machine comprises of rotor and stator as it basic part...

Q: QUESTION 3 The frequency spectrum of a square wave is shown below. A=3.15 kHz, D= 2.65 V, E-12.07 V....

Q: Q6. Determine whether the following Boolean equation is true or false. x'y' + x'z + x'z' = x'z' + y'...

Q: Charging a Capacitor: An RC circuit includes a

Q: find the voltage V in 62 15V 102 50 20 V

A: In this answer we will find the value of V as explained below. We will use the concept of delta-star...

Q: Draw the corresponding symbols of i) 5/2 - way Directional Control Valve, Solenoid Actuated, Spring ...

A: Draw the symbols of (i) 5/2 way directional control valve, solenoid actuated, spring returned (ii) ...

Q: 2. Determine the Q-point and find the maximum peak value of the base current for linear operation. A...

A: Please refer the attached images for the complete answer..

Q: .She (graduate) in 2012 * have graduated O has graduated O graduate O graduated O

A: 2012 means it's already had to be done So

Q: Define the unit step function find out its Laplace transform.

A: Unit step function is a function that is constant throughout the time with magnitude equals to unity...

Q: Q4. Demonstrate the validity of the following identities by means of truth tables: (a) DeMorgan's th...

Q: Code: COFFEE. A single-core cable has a conductor diameter of 13.5 mm and insulation thickness of 8....

Q: single phase full controlled bridge converter uses a. 4 SCRs and 2 diodes b. 4 SCRs c. ...

A: fully controlled converter means it has control over both positive and negative half cycles . where...

Q: X.y+y•z+I•z=x•y+z

A: The solution is given below

Q: The output y(t) of a system with input x (t) is given by y(t) = S** e-(t-r-5) ¤(7 – 5)dr. t+3 1. Is ...

A: Given , Y(t) is a system . We have to find for linear , time invariant and Causal. Please find the b...

Q: The value of the impedance parameter z11 for the circuit shown is..ohms: 10 Ω 10 Ω -10 Ω

A: In this answer we will find the parameter Z11 using the concept of two port network as explained bel...

Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

A 100 kVA, 220/440 V, 50 Hz power transformer is tested at 75 Hz to evaluate the core loss,
while its HVS is open-circuited. The Most appropriate voltage that should be applied to the
LVS is: a
440 V
zenom
330 V
660 V
220 V

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 by step

Solved in 2 steps with 1 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

Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs. (a) True (b) False (ii) In the - circuit representation for real c in part (d), the admittance parameters Y11 and Y12 would be unequal. (a) True (b) False (iii) For complex c, can the admittance parameters be synthesized with a passive RLC circuit? (a) Yes (b) No
A 10 kVA, 500/250 V, single phase transformer has its maximum efficiency of 94% when delivering 90% of its rated output at unity p.t. Estimate its efficiency when delivering its full load output at p.t. of 0.8 lagging,
A 10 kVA, 500/250 V, single phase transformer has its maximum efficiency of 94% when delivering 90% of its rated output at unity p.t. Estimate its efficiency when delivering its full load output at p.t. of 0.8 lagging.3
A 200 kva transformer has an efficiency of 98% at full load. If the max. efficiency occurs at three quarters of full load, calculate the efficiency at half load. P.f. of 0.8 at all loads.
Electrical engineering A 375 kVA, 6600/400 V, 3-phase core type transformer has a total loss of 3700 watts on full load. The transformer tank is 1.25 m in height and 1 m × 0.5 m in plan. Design a suitable scheme for cooling tubes if the average temperature rise is to be limited to 35 °C. The diameter of the tube is 50 mm and are spaced 75 mm from each other. The average height of the tube is 1.05 m.
A 2000 VA 440/110 V transformer has been tested to determine its equivalent circuit. The equivalent impedance referred to the LV side is 0.408/_75.4 deg ohm. If the full-load voltage is 110 V and the full-load current is lagging the voltage at an angle of 43.4 deg, what will the no-load voltage be?
630kVA 31500/400 DY 50Hz transformer has no load and short circuit tests power measurements are given as 1kW and 20kW respectively. Under the fourth of the nominal load with 0,85 capacitive power factor, calculate the efficiency of the transformer at nominal voltage as %?
a 500/100 v potential transformer has following constants :primary resistance =47.25ohm, secondary resistance+0.43ohm,primart reactance=33. secondary reactance is negligible,no load primary current=0.1A at 0.6 p.f. calculate the no load angle between primary and reversed secondary voltage.
The primary and secondary windings of a 500 kVA transformer have resistances of 0.44 Ω and 0.0027 Ω, respectively. The rated primary and secondary voltages are 11013 V and 473 V, respectively and the core loss is 2.9 kW. Assuming the power-factor of the load to be 0.8, calculate the output at which the efficiency is a maximum. Give your answer in kVA correct to 2 decimal places.
Parameters of a 20 kVA, 2200/220 V, 50 Hz distribution transformer, R1 = 5 Ω R2 = 0.04 Ω Rc = 3000 Ω X1 = 15 Ω X2 = 0.14 Ω Xm = 2500 Ω given as. According to this, a) Find the equivalent circuit transferred to the high voltage side. b) When the transformer is operating at its rated load, the load voltage is 220 V and the power factor is 0.8 behind. Via the equivalent circuit you got above, b1) Input current, (I1 =?) b2) Input voltage, (V1 =?) b3) Input power factor, (φ1 =?) b4) Copper and core losses, (Pcu = ?, Pc =?) b5) Efficiency, (η =?)
A 200 KVA transformer has an efficiency of 98% at full load. If the maximum efficiency occurs at three quarters of full load, calculate the efficiency at half load. Assume p.f. of 0.8 at all loads. [ Ans: 97.9%]
The maximum efficiency at Full-load and Unity power factor of a 1-phase, 25 kVA, 2000/1000V, 50Hz transformer is 98%. Determine its efficiency at 1/4th of full load