Analog Electronics MCQ Questions & Answers

Analog Electronics MCQ Questions & Answers | ECE

Learn Analog Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Analog Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-8 section-4

For a MOSFET satisfying the relationship V_DS < V_GS - V_TH, where the drain voltage is V_DS, the gate voltage is V_GS, and the threshold voltage of the transistor is V_TH, then the transistor is said to operate in:

A) Pinch off B) Saturation C) Cut off D) Triode region

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Answer & Solution

Answer: Option D

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To get a peak load voltage of 40 V out of a bridge rectifier. What is the approximate rms value of secondary voltage?

A) 0 V B) 14.4 V C) 28.3 V D) 56.6 V

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Answer & Solution

Answer: Option C

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If the inverting input terminal of an operational amplifier is grounded and a sinusoidal voltage waveform is applied at the non-inverting input terminal, the output will be:

A) Square wave B) Triangular wave C) Half-wave rectified sine wave D) full-wave rectified sine wave

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Answer & Solution

Answer: Option A

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In order to increase the bandwidth of tuned amplifiers, one can use:
1. Tuned circuit with inductance having high Q factor
2. Double tuned amplifier with two tuned circuits coupled by mutual inductance
3. Staggered tuned amplifiers in which different tuned circuits which are cascaded are tuned to slightly different frequencies

A) 1, 2 and 3 B) 1 and 2 only C) 2 and 3 only D) 1 and 3 only

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Answer & Solution

Answer: Option C

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All transistor in the N output current mirror in the figure are matched with a finite gain β and early voltage V_A = ∞. The expression for load current is
Analog Electronics mcq question image

A) $$\frac{{{{\text{I}}_{{\text{ref}}}}}}{{\left( {1 + \frac{{\left( {1 + {\text{N}}} \right)}}{{\beta \left( {\beta + 1} \right)}}} \right)}}$$ B) $$\frac{{{{\text{I}}_{{\text{ref}}}}}}{{\left( {1 + \frac{{\text{N}}}{{\beta \left( {\beta + 1} \right)}}} \right)}}$$ C) $$\frac{{\beta {{\text{I}}_{{\text{ref}}}}}}{{\left( {1 + \frac{{\left( {1 + {\text{N}}} \right)}}{{\beta \left( {\beta + 1} \right)}}} \right)}}$$ D) $$\frac{{\beta {{\text{I}}_{{\text{ref}}}}}}{{\left( {1 + \frac{{\text{N}}}{{\beta \left( {\beta + 1} \right)}}} \right)}}$$

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Answer & Solution

Answer: Option A

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For an n-channel MOSFET, if condention parameter (k_n ) is 0.249 mA/V², gate to source voltage V_GS is 2V_IN where V_IN = 0.75 V. The current will be

A) 0.160 mA B) 0.150 mA C) 0.140 mA D) 0.170 mA

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Answer & Solution

Answer: Option C

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Consider the following statements regarding the circuit given in the figure, where the output voltage is constant;
1. V_in > the Voltage at which the Zener breaks down.
2. I_L < the difference between I and I_z the current at which the Zener breaks down.
3. R_s < the Zener normal resistance.
Of these statements
Analog Electronics mcq question image

A) 1, 2 and 3 are correct B) 1 and 2 are correct C) 2 and 3 are correct D) 1 and 3 are correct

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Answer & Solution

Answer: Option B

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