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(chatquestion)...A generation plant has a 12kV, balanced three-phase, wye connected synchronous generator. It has two (2) pole pairs and is coupled to and driven by a gas turbine engine which maintains the rotational speed of the rotor at 1500 rpm. The output of the generator is connected to a 12kV/66kV delta-star composite three phase transformer in the plant's substation. The transformer secondary windings then connect to three transmission lines that leave the substation, each of which has a total resistance and inductance of 102 and 95.5mH respectively. The total number of customers supplied by the transformer is modelled as a balanced three phase delta connected load at the end of the transmission lines with a resistance and inductance of 5002 and 1.5H respectively per phase. a) State and explain the purpose of the transformer in this scenario. (5 marks) b) Draw a labelled diagram of the entire three phase system clearly showing all known voltages (phase and line values) and the three phase configurations of all components. (10 marks) c) Assuming the transformer is ideal and lossless and that all neutrals are grounded, calculate: i) The line currents between the transformer and load (12 marks) ii) The phase currents in the delta load (4 marks) iii) The phase voltages of the delta load (6 marks) iv) The total apparent power supplied to the load (3 marks)...(Can I get some help with this question please)

asked Jun 3, 2020 by balaji.thirumalai

0 answers

(chatquestion)...Given that the standard electrode potentials (E°) of metals are : K/K = -2.93 V, Ag/Ag = 0.80 V, Cu²/Cu = 0.34 V, Mg2+/Mg = -2.37 V, Cr³/Cr = -0.74 V, Fe2*/Fe %3D = -0.44 V. %3D Arrange these metals in increasing order of their reducing power.

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...70. For any medium, electric flux density D and electric intensity E are related as A. D = E O E. В. C.D=c0crE. D. EO Er

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...68. Electric field intensity between the plates of a parallel plate condenser is E. Now if a dielectric of medium of dielectric constant c is introduced between the plates, the electric field intensity will become

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(a) Adsorption of a gas on surface of solid is generally accompanied by a decrease in entropy, still it is a spontaneous process.

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Describe a conspicuous change observed when (i) a solution of NaCl is added to a sol. of hydrated ferric oxide. (ii) a beam of light is passed through a solution of NaCl and then through a sol.

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Let a, = 8 + (n – 1)d, n e N. If lim | 1 af 1 then the value of d is equal to 4 %3D r=1

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...There is a uniformly charged non conducting solid sphere made of material of dielectric constantone. If electric potential at infinity be zero, then the potential at its surface is V. If we take electric potential at its surface to be zero, then the potential at the centre will be Ve Vg 32 (2) 3V (1) (3) V (4) Zerggo

asked Jun 2, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A parallel plate condenser with plate area A and separation d is filled with two dielectric materials as shown in the given below. The dielectric constants are K1 and K2 respectively. The capacitance will be :- d/2 d/2 1 (K, + K2) E0A (K, +K2 2 K,K2 250A K,K2 3 d K, + K2 250A (K, + K2 K,K2 4 d +

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The distance of the point having position vector -i+27+ 6k from the straight line passing through the point (2, 3, -4) and parallel to the vector, 6i + 3j - 4k is: (a) 4/3 (b) 7 (c) 2/13 (d) 6

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...! The major product of the following reaction is Br NaBH4 MeОН, 25°C OH OMe OMe (a) (b) OH Br (c) (d)

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(61 3i +3, i+V3) and Bi+(1-B)} respectively be the Let position vectors of the points A, B and C with respect to the origin O, If the distance of C from the bisector of the acute angle between OA and OB is 3. then the sunm of all possible values of B is (b) 4 (a) 1 (c) 3 (d) 2 (January 2019)

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Silver crystallises in fcc lattice. If edge length of the cell is 4.07 × 10-8 cm and density is 10.5 g cm-3, calculate the atomic mass of silver.

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Select thes Rtatement. (1) cere wall in preaent in member of fungi and plantal. (2) MUshroonmA belong to Banidiomycutea (3) Preudopodia wrong कपल्प्लमाण ane locomotory and feading in Aporozoans. structure. M) Mitochondria aye the Power houne of the collin all kingdom exupt Monera.

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Double fertilization is (1) Fusion of two male gametes of a pollen tube with two different eggs (2) Fusion of one male gamete with two polar nuclei (3) Fusion of two male gametes with one egg (4) Syngamy and triple fusion

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which of the following elements is responsible for maintaining turgor in cells? (1) Magnesium (2) Sodium (3) Potassium (4) Calcium

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...136. Which of the following statements is not true for halogens? (1) All form monobasic oxyacids (2) All are oxidizing agents (3) All but fluorine show positive oxidation states (4) Chlorine has the highest electron-gain enthalpy

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The correct order of atomic radii in group 13 elements is (1) B< Al < In < Ga < TI (2) B< Al < Ga < In < TI (3) B< Ga < Al < TI < In (4) B< Ga < Al < In < TI

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...shutte together to give diethyl ether. A, B and C are in the order The compound A on treatment with Na gives B, and with Pci, gives C. B and C react (1) C,H,OH, C,Hg, C,H,CI (2) C̟H;OH, C,H,CI, C,H,ONa (3) C,H̟CI, C,Hg, C,H,OH (4) C,H,OH, C,H̟ONa, C,H,CI

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...143. Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is (1) CH = CH (2) CH, = CH, (3) CH, – CH, (4) CH,

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...146. Following solutions were prepared by mixing different volumes of NAOH and HCI of different concentrations : M HCI + 40 mL 10 M NaOH 10 a. 60 mL M HCI + 45 mL 10 M NaOH 10 b. 55 mL M HCI + 25 mL 5 M NaOH c. 75 mL M HCI + 100 mL 10 M NaOH 10 d. 100 mL

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity? (1) N,O5 (2) NO2 (3) N,0 (4) NO

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...148. The solubility of BaSO, in water is 2.42 x 10³ gL-1 at 298 K. The value of its solubility product (Kp) will be (Given molar mass of BaSO, = 233 g mol-1) (1) 1.08 × 10-10 mol²L-2 (2) 1.08 × 10-12 mol²L-2 (3) 1.08 × 10-14 mol²L-2 (4) 1.08 × 10-8 mol²L-2

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which of the following compounds can form a zwitterion? (1) Aniline (2) Acetanilide (3) Benzoic acid (4) Glycine

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which of the following molecules represents the order of hybridisation sp?, sp², sp, sp from left to right atoms?

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...160. Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s² 2s² 2p³, the simplest formula for this compound is (1) Mg,X3 (2) MgX2 (4) Mg,X2 (3) Mg,X

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Among CaH,, BeH2, BaH2, the order of ionic character is (1) BеН, < CаН, < ВаН, (2) CаН, < BеН, < Ван, (3) BеН, < BаН, < Сан, (4) ВаН, < BеН, < Cан,

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...When initial concentration of the reactant is doubled, the half-life period of a zero order reaction (1) Is halved (3) Is tripled (2) Is doubled (4) Remains unchanged

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...VOLTE VOLTE 85% 1:42 РМ CH, H CH3 C=CH, C=C 3. || H CH2 CH, CH, CH, (а) (b)...(Compare the stability.)

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...An ideal gas is found to obey an additional law given by- P'V=const. The initial pressure, temperature and volume of the gas are P, V and T, respectively. The gas is heated to increase its temperature to 2T. Answer questions 72 and 73. 72.The final volume of the gas is- (1) V (3) 2V (2) V2V (4) 4V

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A bob is hanging over a pulcy nside a Car through a string. The second end ol the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a directed horizontally as shown. Other end of the string is pulled with constant acceleration 'a' vertically. The tension in the string is (b) m/g² +a² 2+a² -n -та (a) mg+ a' (c) mg? +a² + ma (d) m(g+a)

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The blockS of masses m and 1 are not attached, The coefficient of static friction between the blocks is u. but the surface beneath / is smooth. What is the maximum magnitude of the horizontal force F required to hold it against M: m M smooth m(M + m)g (a) m(M + m)g (b) HM M(M+ m)g (c) (d) m (M+m)g

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Question 2.1: Calculate the mass percentage of benzene (C6H5) and carbon tetrachloride (CCI4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...=>A wire 2.5m leng And vrass-setioh area 10 2. is streched 1.S mm by a fore of 100 N in the elastie Heğion Calculate is the brain i yourg's modulus s the eheng wise- eheryy stored in the

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...183 In circuit (Fig.), there is negligible potential drop between B and E, ir p is 100. Calculate L hase current collector current potential drop across Re Iv. Va ii.

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A An infinite conducting sheet has surface charge density o. The distance between two equipotential surfaces is r. The potential difference between these two surfaces is or or (2) (1) 260 (4) 2Eo (3) Eor

asked Jun 1, 2020 by balaji.thirumalai

1 answer

(chatquestion)...72 79 77 83 90 18 54 62 45 (220 365 250 294 30 56 30 44 61) 72 83 60 10.5 5.5 8.5 10.0

asked May 31, 2020 by balaji.thirumalai

0 answers

(chatquestion)...V3x² +1 (ii) f(x) = sin-1 5x2 +1

asked May 31, 2020 by balaji.thirumalai

0 answers

(chatquestion)...A toach bulb @. 6 is srated 2.s V 750MA. Calulate i) its powed, i) ile relistance and i) the cnergy Consumed , if this bulo is houds. this lighted for ? faud

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Q. Q The charge poisested by an ē i. ind the no. C. that of of will flow Rex seand to cohatitute I ampete. Cu arent

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...- About 5% of the powes of a 100w light bulo is Cohvexhd to visible adiation what is the aerage intensity Madiation y of visible (0).at. t6j at Assume that the adiation is emitled isatrapically And haylet seflection A distance of Im f om the bulo ? a distanco of lom?

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Page Qi a) The refackve indox of glas 1.5. what is the in glons 2(speed Speed of y lin Qy light Načcum 3:0 ms- 5 the Specd heCalaud light in foes indepondent light2 the two and violet toovels lowed glass phism2 Coloud 4 had which hot colauias rdY

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Question 7: The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B, = 510 nT. What is the amplitude of the electric field part of the wave? %3D

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Three electrolytic cells, A, B, C containing solutions of ZnSOs, AGNO: and CuSO4, respectively are connected in series. A steady current of 1.5 amperes was passed through them until 45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A solution of Ni(NO:); is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The reaction, Cr0, +241 → Al,O, + 2Cr (AG -421ks) is thermodynamically feasible as is apparent from the Gibbs energy value. Why does it not take place at room temperature?

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...In a growing population of a country, (1) pre-reproductive individuals are more than the reproductive individuals. (2) reproductive individuals are less than the post-reproductive individuals. (3) reproductive and pre-reproductive individuals are equal in number. (4) pre-reproductive individuals are less than the reproductive individuals.

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which of the following organisms are known as chief producers in the oceans? (1) Dinoflagellates (2) Diatoms (3) Cyanobacteria (4) Euglenoids

asked May 31, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which of the following is an amino acid derived hormone? (1) Epinephrine (2) Ecdysone (3) Estradiol (4) Estriol

asked May 31, 2020 by balaji.thirumalai

1 answer

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