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Construction and operation of varactor diode.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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Derive the expression for frequency of oscillation for a BJT RC phase shift oscillator.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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Explain the concept of thermal runaway in BJT.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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369
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Explain the effect of temperature on resistance of different material
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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681
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What are the losses in a transformer? Explain why the rating of transformer is in kVA and not in kW
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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409
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Explain the input and the output characteristics of transistor in common emitter configuration.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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Differentiate between Ideal and Practical transformers.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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438
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Define RMS value in alternating waveforms.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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A voltage of 150V, 50Hz is applied to a coil of negligible resistance and inductance 0.2H. Write the time equation for voltage and current.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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406
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Explain input characteristics of common emitter configuration.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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2.5k
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Three similar coils, connected in star, take a total power of 1.5 kW at a p.f. of 0.2 lagging from a three phase, 440 V, 50 Hz Supply. Calculate the resistance and inductance of each coil.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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538
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Define the equation for resonance frequency (fr) in parallel resonance circuit.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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An alternating voltage is given by V = 141.4 sin 314t. Find (i) Frequency (ii) RMS Values (iii) Average Value (iv) Instantaneous value of voltage at t = 3msec.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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589
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State and explain maximum power transfer theorem
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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433
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Draw and explain Output characteristics of transistor in CE configuration.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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436
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What is the function of filter in rectifier circuits. Explain with appropriate waveforms.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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429
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Give the comparison between series and parallel resonance circuits.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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2.1k
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Derive the condition for maximum power transfer through the network.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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508
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Derive condition for maximum efficiency of a trransformer. Also deive equation for load at maximum efficiency.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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444
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Find the value of circuit elements and reactive voltampere drawn for a balanced 3 phase load connected in delta and draws a power 12k W at 440V. The power factor is 0.7 leading.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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462
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A 3 phase, 10 KVA lead has power factor of 0.342.The power is measured by two wattmeter method. Find the reading of each wattmeter when. (i) Power factor is leading
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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464
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What is function of filter in rectifier circuit ? Draw of rectifire with inductor filter.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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518
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What are the losses in the transformer? Explain why the rating of transformer in KVA not in KW.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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2.0k
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Three identical coils each [4.2-j5.6] ohm are connected in star Across 415 V, 3 Phase, 50Hz supply. Deterine (i) Vph (ii) Iph (iii) Power factor.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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520
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Derive the equation for resonance frequency [fr] in parallel resonance circuit.
analog electronics updated 3.5 years ago by teamques10 ★ 68k
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