SELT-TEST1. Fill in the blanks by inserting appropriate words/figures.(i) The most common system for secondary distribution is 400..... V. 3-phase. wire system.(ii) In a 3-phase, 4-wire a.c. system, if the loads are balanced, then current in the neutral wire is........(iii) Distribution transformer links the............ andsystems.(iv) The 3-phase. 3-wire a.c. system of distribution is used for......... loads.(v) For combined power and lighting load.system is used.2. Pick up the correct words/figures from brackets and fill in the blanks.(i) 3-phase. 4-wire a.c. system of distribution is used forload.(balanced, unbalanced)(ii) In a balanced 3-phase. 4-wire a.c. system, the phase sequence is RYB. If the voltage of R phase =230 20 volts, then for B phase it will be.........(230 2-120 volts, 230 2120 volts)(iii) In a.c. system, additions and subtractions of currents are done(iv) The area of X-section of neutral is generally(r) For purely domestic loads.(vectorially, arithmetically)that of any line conductor. (the same, half)a.c. system is employed for distribution.(single phase 2-wire, 3-phase 3-wire)

Since you have posted multiple questions, we will provide the solution only to the first five…

1. Fill in the blanks by inserting appropriate words/figures. . wire system. (i) The most common system for secondary distribution is 400..... V. 3-phase.. (ii) In a 3-phase, 4-wire a.c. system, if the loads are balanced, then current in the neutral wire is (iii) Distribution transformer links the ......... systems. ....... and distribution (iv) The 3-phase. 3-wire a.c. system of (v) For combined power and lighting load. is used for .......... System is used. loads.

1. Fill in the blanks by inserting appropriate words/figures. . wire system. (i) The most common system for secondary distribution is 400..... V. 3-phase.. (ii) In a 3-phase, 4-wire a.c. system, if the loads are balanced, then current in the neutral wire is (iii) Distribution transformer links the ......... systems. ....... and distribution (iv) The 3-phase. 3-wire a.c. system of (v) For combined power and lighting load. is used for .......... System is used. loads.

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 3.58P: A single-phase two-winding transformer rated 90MVA,80/120kV is to be connected as an autotransformer...

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