BSc Physics SEM II 2017 18 2017-18 ATKT PHYSICS I Question Paper - Mumbai University | munotes

Questions asked in this paper

• ) Figures to the right indicate full marks

1. Q1 State Thevenin’s theorem it with suitable example
   • B) Attempt any one. {7 Marks] State and explain Superposition Theorem
   • b) Derive an expression for discharging of capacitor in C-R series circuit
2. Q1 C) Attempt any one. 5 marks
   • a) State Constant current source and explain in brief
   • b) The time constant of a coil is 2ms .It is connected in series with resistance of 40 Q. The time of series combination is Calculate the self inductance and resistance of the coil
3. Q2 A) Attempt any one. [8
   • a) Draw a parallel L-C-R circuit an expression for its resonant frequency
   • b) Explain de Sauty’s capacitance bridge .Find the condition for balancing the condition is independent of frequency of the applied voltage q 7 Marks
4. Q2 B) Attempt any one
5. Q4 Find the condition of the balance for Wein’s bridge. How would you determine the frequency the AC supply” and for Parallel L-C-R Derive an expression for current magnification anc Q
   • C) Attempt any one is connected across 200 Q resistance. Calculate aN specified as he rms current thought the circuit of the source. Also calculate te rms na L/C bridg e, the balance COndition is
   • a) Explain the input and output characteristics of voltage regulation’ Obtain the for
6. Q3 B) Attempt ONY marks) Explain NAND and NOR gates with th their logic statements, logic symbol, ind the relation between current amplification factor @ and
7. Q3 C) Attempt any one. [5 What is EX-OR gate? What is the d ifference between inclu OR ge ite and exclusive OR
   • b) A 400 mW zener diode with breakdown voltage 5V as negligible resistance .Find the maximum current its can carry. What is the current limiting resistor for this zener to carry current if the supply voltage is 15 V?
   • a) State the following theorems
8. Q1 Norton’s theorem An inductance of 4 Henry and a resistance of Connected in series with a de source o! Calculate the current in the circuit 6 sec after itis switched on the resonant frequency tor tle

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