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2003 Course Basic Electrical Eng.

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Total No. of Questions : 12] [Total No. of Printed Pages : 4 [3761]-14 F. E. Examination - 2010 BASIC ELECTRICAL ENGINEERING (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions : (1) Answer three questions from section I and three questions from section II. (2) Answers to the two sections should be written in separate books. (3) Black figures to the right indicate full marks. (4) Neat diagrams must be drawn wherever necessary. (5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket scientific calculator and steam tables is allowed. (6) Assume suitable data, if necessary. SECTION - I Q.1) (A) Define Insulation Resistance and derive its expression for a Cable. [06] (B) Write a short note on Nickel-Cadmium Cell. [05] (C) A piece of silver has a resistance of 1 . What will be the resistance of manganin wire of one-third of the length and onethird the diameter if the resistivity of manganin is 30 times that of silver ? [06] OR Q.2) (A) [3761]-14 An electric water heater raises the temperature of 20 liters of water from 16oC to 100oC. If the efficiency of the heater is 85%, calculate the energy consumed by the heater in (i) Joules (ii) in kwh. The sp. heat capacity of water is 4190 J/kgK. [06] 1 P.T.O.

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