Exam Details

Subject Electrical Circuits and Electronics
Paper
Exam / Course Bachelor Degree Programme (Elective Course: Physics)
Department School of Sciences (SOS)
Organization indira gandhi national open university
Position
Exam Date December, 2015
City, State new delhi,


Question Paper

Express the binary number 1101012 into its decimal equivalent.

Realize a 2-input AND gate using diodes and resistors.

An LCR circuit in series consists of 50 ohm resistance, 0·1 H inductance and 10 MF capacitor with an applied voltage source 20 V. Calculate the resonance frequency.

Draw the voltage transfer curve for an ideal Op-Amp.

Draw the circuit diagram of a bridge rectifier.

Why is impedance matching between transmitter and receiver important?

Write down the conditions to obtain sustained oscillations in an oscillator.

State and prove Thevenin's theorem.

Write the expression for attenuation (in dB) in terms of input and output power. Obtain the expressions for R1 and R2 in a symmetrical T-attenuator.

Draw the diagram showing structure and biasing of depletion mode MOSFET and explain its working.

Draw a circuit for a common emitter amplifier. Obtain an expression for current gain of CE amplifier in terms of h-parameters.

Draw the circuit of a Colpitts oscillator. This oscillator oscillates at 10 MHz frequency. Determine the equivalent capacitance, C forming the tank circuit with 0·1 mH

Draw and explain the working of centre tapped full wave rectifier. Calculate its ripple factor.

Explain the working of an Op-Amp as a zero crossing detector. Draw its output voltage waveform when the input waveform shown below is given to its non-inverting terminal.

<img src='./qimages/14942-4a.jpg'>

Draw the circuit diagram of a basic integrator using Op-Amp. Obtain the expression for its output voltage.

Calculate the minimum slew rate of an Op-Amp required to obtain the output of ± 10 V triangular wave at 1 MHz frequency.

What is race around condition m an RS flip-flop? How can RS flip-flops be converted into D-type flip-flops? How is race around condition avoided in a D-type flip-flop?

A 5-bit DAC produces 20 mV output for digital input of 00101. What will the output voltage for the digital input of 10101 be

Explain the construction and working of a magnetic flux-meter.


Departments

  • Centre for Corporate Education, Training & Consultancy (CCETC)
  • Centre for Corporate Education, Training & Consultancy (CCETC)
  • National Centre for Disability Studies (NCDS)
  • School of Agriculture (SOA)
  • School of Computer and Information Sciences (SOCIS)
  • School of Continuing Education (SOCE)
  • School of Education (SOE)
  • School of Engineering & Technology (SOET)
  • School of Extension and Development Studies (SOEDS)
  • School of Foreign Languages (SOFL)
  • School of Gender Development Studies(SOGDS)
  • School of Health Science (SOHS)
  • School of Humanities (SOH)
  • School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
  • School of Journalism and New Media Studies (SOJNMS)
  • School of Law (SOL)
  • School of Management Studies (SOMS)
  • School of Performing Arts and Visual Arts (SOPVA)
  • School of Performing Arts and Visual Arts(SOPVA)
  • School of Sciences (SOS)
  • School of Social Sciences (SOSS)
  • School of Social Work (SOSW)
  • School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
  • School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
  • School of Translation Studies and Training (SOTST)
  • School of Vocational Education and Training (SOVET)
  • Staff Training & Research in Distance Education (STRIDE)

Subjects

  • Astronomy and Astrophysics
  • Communication Physics
  • Electric & Magnetic Phenomena
  • Electrical Circuits and Electronics
  • Elementary Mechanics / Ocillations & Waves
  • Mathematical Methods in Physics-I/ Mathematical Methods in Physics-II
  • Mathematical Methods in Physics-III
  • Modern Physics
  • Optics
  • Physics of Solids
  • Thermodynamics & Statistical Mechanics