4. Petroleum industry includes %3D upstream" which includes all the following processes except .... O storage O exploration Oextraction O refining
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- (b).Explain with reasons why hydro power generation is sometimes disadvantageous.Q.1: / (A) Fill in the blanks with appropriate words of the following choose only five: 1. The Magnetizing curve can be analyzed as 2. AC machines using AC supply but running slightly less than the synchronous speed are called ------. and 3. loss can be reduced by using core of thin laminations whereas the -------- loss can be minimized by using steel of high silicon content. 4. ---- gives the relation between the e.m.f. (E) actually induces in the armature and the armature current (Ia). 5. The induced e.m.f. acts in direction to the applied voltage V(Lenz's law) and in known as back e.m.f. Eb. 6. The torque developed in D.C motor depends on and ------Discuss the operating principle of the hydroelectric power plant
- Q4) Identify the unit of flux density a. (m x m)/amp b. m x m c. Wb/(m x m) d. WbWhich one of the following d-c machine losses is determined by applying a standard value rather thanby measurement?A. Friction and windage lossB. Core lossC. Copper lossD. Stray-load loss Note: I have doubts if it is the letter B or the letter D, can you help me in this question, thanks.Q-1: Give brief answer to the following: (Answer Ten only)1) what is the potential transformer used for in power substation?2) what is process leads to lowering the number of free electrons?3) what is The Townsend’s Criterion4) why Sulphur Hexafluorid has good insulation strength?5) What is Intrinsic Breakdown6) why do bubbles lead to breakdown of liquid?7) how to decease the ripple voltage of cockroft-walton voltage multiplier circuit8) how much the maximum charging current of A Van de Graaff generator has a beltwidth 1 m, a belt speed of 4 m/s, and charge density of 10 c/m29) Why does need for Reactive Power Compensation in test transformer?10) The output voltage of series resonant circuit is given by the formula _________11) what is impulse voltage and what is its standard wave shape?12) Which advice can measure impulse voltage?
- consider the ID as 12345679Question 1 Select all that apply. Which of the following are considered to be "core losses"? 12R heating loss Flux lines that bulge out at core gaps Currents that circulate within the machine non-ferrous components Field Lines that circulate around conductors and coils Rapid Changes in Domain orientationA docs.google.com/f 0 :D welding purpose is a shunt generator Indicate whether the following - * statement are true or false False True In a dc machine for the same value of Z, N, O armatūre, e.m.f. is more with wave winding than with lap winding
- i. Calculate the current that required to produce a flux density of 0.5 T in the central leg of the core. ii. Calculate the current that required to produce a flux density of 1.0 T in the central leg of the core? Is it twice the current in Q1(b) (i). iii. Calculate the reluctances of the central and right legs of the core under the conditions in Q1(b) (i). iv. Calculate the reluctances of the central and right legs of the core under the conditions in Q1(b) (ii). v. Explain the conclusion that you can make about reluctances in real magnetic cores.List 3 different concepts of Electricity(gravity) not hydro generation using weights design. Each concept must have an introduction and design description. Include a photo of each trenching machine design and modeling concept. For Example : Mass electricity generationGive the analogous quantities for electrical voltage in linear mechanical, pneumatic, hydraulic and thermal systems. b. Illustrate by diagrams the isomorphism of the processes in RC electric circuit and pneumatic system.