The actual impedance of a load is 30 OHM. The per-unit impedance of the load is 0.5 pu when Base Voltage is 600 V and Base Power is O 6000 VA O 2000 VA O 4000 VA O 8000 VA

Q: 4.A generating station has the following daily load cycle : Time (Hours) 0-6 6-10 10-12 12-16 Load…

A: In the generating system,  Daily load curve data are given Find the maximum demand Energy per day…

Q: 1, Please write down the rated voltage of the generator and the transformation ratio of each…

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Q: a) why is there a wattmeter reading when the load is purely inductive

A: Given that  a) why is there a wattmeter reading when the load is purely inductive b) why is there no…

Q: 5. Two single-phase transformers are connected in open delta. The rating of each is 15 kVA, 2400/240…

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Q: A 30 MVA 11 kV generator has a reactance of 0.10p.u.on its own base. Determine the per-unit…

A: Given: For the generator Sbold=30 MVAVbold=11 kVXpuold=0.1 puSbnew=50000 KVA=50 MVAVbnew=33 kV

Q: Hw2.1-4: Draw the phasor diagram for the following cases: • Exact equivalent circuit with lagging…

A: Consider a inductive type load.  Voltage across the load is V1.  Draw the phasor diagram for lagging…

Q: 160 kVA 22 KV 22 KV 20/0.5 KV Generator G X= 9% Line 200 kVA 40 kVA Z- 2 + j5 2 X= 10% X= 8%…

A: Old base values of generator are 160 KVA, 22 KV. New base values are 160 KVA, 22 KV

Q: If a Load absorbs 10 kVA at a leading power factor of 0.6. Then the complex power is: Select one: a.…

A: Complex power

Q: -2. A. A lighting load of 2000 kW and a mo pplied by two alternators running in parallel E. lagging.…

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Q: Overhead power transmission lines are Select one: O a. Three phase two wire O b. Three phase four…

A: we need to answer overhead power transmission lines are of which type ??

Q: A load absorbs 20 kVA at a lagging power factor of 0.6. The complex power is: Select one: O a. 20000…

A:

Q: Load duration curve Hours 0 500 2000 4500 6000 8760 Mw 50 Load 50 35 30 20 |15 there are two (2) -40…

A: Rating of each generator = 40 MW Energy = power X time Plant load factor = Actual energy generated…

Q: A tree-phase generator has a load 100 kw per phase at a power factor 80 percent,lagging what is the…

A: The active power consumed by a 3ϕ load is equal to the sum of active power consumed by each load.…

Q: 1) Three scheduled generating units have the following input-output curves: Unit 1: Unit 2: Unit 3…

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Q: For a 3-phase ac device, full load current is 40A, line voltage is 450V and reactance value is…

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Q: Loads can be classified according to the Nature of the Load. Which among these is not included as…

A: There are three types of loads based on the nature of loads They are Resistive ,inductive and…

Q: .) A load of 23 kVA, wit power factor lagging is connected to a 240 vol How much capacitive r power…

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Q: The incremental cost characteristics of t generators delivering 200 MW are as follows: dF2 dP ah =…

A:

Q: Three single-phase transformers are connected into a three-phase bank. The primary is connected as a…

A: In this question we need to find a phase voltage of primary.

Q: What are harmonic producing loads and how these loads affect the power quality

A: Harmonics are explained as the characteristics of a voltage or current waveform with relation to its…

Q: 30 0 b. 25 0 10 0 200 50 150 36.250

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Q: 1- If number of poles in a lap wounded generator is increased by a factor 2, then generated emf…

A: As per guidelines we are supposed to solve only first question if multiple questions are asked by…

Q: Refer to the autotransformer circuit in following figure. Calculate: (a) I1. 12 and lo if Z = 8 + j6…

A: From the given network we can write  From the current I2 is given as

Q: A generating station has the following daily load cycle : Time (Hours) 0-6 6-10 10-12 12-16 16-20…

A: This question belongs to power system . It is based on the concept of load curve . By making load…

Q: The incremental cost characteristics of two generators delivering 200 MW are as follows: dF₁ = 2.0 +…

A: Given the incremental cost characteristics of two generators, Generator 1 incremental cost…

Q: The regulation of an alternator is likely to be negative in case of resistive load O True O False

A: Regulation of alternator at any load is   Voltage regulation = Rpucos(∅)±Xpu sin(∅) + for lagging…

Q: A. – 78.1 - j41.9. B. 93.4 – j77.8 C. 120.2 - j20.7 D. - 114.1 - j41.9 REE – April 2005 42. The…

A: In this question we need to find a total load current in amperes.

Q: Use the information below to answer questions 24 un The voltage across and the current through a…

A:

Q: 6. A generating station has the following daily load cycle: Time (hours) 0-6 6-10 10-12 12-16 16-20…

A: The solution can be achieved as follows. The answer attached with the question is incorrect.

Q: What is the value of the equivelent impedance? 302 202 102

A: As shown in fig,Zeq=Z1+(Z2||Z3) Zeq= (25 + j15) +[ (20 − j50)||(30+ j10) ]         = 25 + j15 +[ (20…

Q: The rating of generator is expressed in terms of kVA      Select one: True False

A: The rating of generator is in Apparent power kVA.because the power factor is varied for different…

Q: If a Load absorbs 20 kVA at a leading power factor of 0.6. Then the complex power is: Select one: a.…

A:

Q: A generator is supplying a load. An incremental change in load of 4 MW requires generation to be…

A:

Q: For the system shown in the following figure, draw an impedance diagram in per unit, by choosing 100…

A: To find the impedance diagram of the given network, it is most important to calculate base KVA and…

Q: A generating station has the following daily load cycle : Time 0-6 6-10 10-12 12-16 16-20 20-24…

A: Load curve:

Q: Q5/C: Compare between Auto transformers and 2 winding transformers.

A: The transformer is a static electrical device in which is used to step up/down the current and…

Q: Three Phase Induction Motor Load Test, . At what load will the efficiency be maximum

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: The reactance of a generator is given as 0.25 per-unit based on the generator’s of 18 kV, 500 MVA.…

A:

Q: A generation station has the following daily load cycle: Time (h) 0-6 6-10 10-12 12-16 16-20 20-24…

A:

Q: A load impedance of (200+j0) ohm is to be matched with a 50 ohm transmission line using a quarter…

A: Quarter wave transformer is an impedance matching device and it resides between the transmission…

Q: A generating station has the following daily load cycle: Time (Hours) Load (MW) 0-5 5-10 10-12 12-16…

A: We can solve the problem in following manner.

Q: A generating station has the following daily load cycle : Time (hours) 0-6 6-10 10-12 12-16 16-20…

A:

Q: If a Load absorbs 20 kVA at a leading power factor of 0.6. Then the complex power is: Select one: O…

A: A leading power factor means the impedance of the circuit is capacitive and causing the phase…

Q: Figure below shows a power system. The rating of generators and transformers are:G1:25MVA, 6.6KV,…

A: base value 30 KVA  and 6.6 KV=0.03 MVAXpu(new)= Xpu(old) ×(MVAnew)(MVAold)×(KVoldKvnew)2

Q: The load of 860 kVA with 0.69 power factor lagging, then the kW rating of the load is

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Q: 2 The electric power company is concerned with the loading of its transformers. Since it is…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: When connecting the circuit in the figure to an AC voltage generator, it is possible to say that L O…

A: Note: We are authorized to answer one question at a time, since you have not mentioned which…

Q: Two turbo alternators rated for 140 MW and 260 MW have gov ernor drop characteristics of 5% from no…

A: We have 2 turbo alternator and they are connected in parallel to share a load of total 250 MW. 1st…

Q: What is a microgrid and what are its advantages

A: Microgrid: A microgrid is a local energy grid with control capabilities, allowing it to function…

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.