Analog Electronics MCQs with Answers 2027

Q361

The cut-in voltage V_γ and thermal voltage V_T for the diode D in figure shown below are 0.498 V and 2 mV, respectively.
If the value of resistor R is 20 Ω, the current flowing through the diode is:
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Q362

Open question

The current through the resistor R in the below
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Q363

Open question

What will be the average value of V(t) in the circuit given below

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Q364

Open question

Match List-I (Application of the circuit) with List-II (Circuit Name) and select the correct answer using the options given below the lists:

List-I (Application of the circuit)	List-II (Circuit Name)
a. Divider	1. Astable multivibrator
b. Clips input voltage at two predetermined Levels	2. Schmitt trigger
c. Square wave generator	3. Bistable multivibrator
d. Narrow current pulse generator	4. Blocking oscillator

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Q365

Open question

Roll-off factor is defined as

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Q366

Open question

Match List-I (Models of BJT) with List-II (Applications) and select the correct answer using the options given below the lists:

List-I (Models of BJT)	List-II (Applications)
a. Hybrid model	1. Microwave measurements
b. Hybrid pi-model	2. Coupled diode
c. S-parameter	3. Low frequency
d. Ebers-Moll model	4. High frequency

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Q367

Open question

Thermal runaway will take place if the quiescent point is such that

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Q368

Open question

The relation between β and α is . . . . . . . .

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Q369

Open question

A transistor has h_fe = 50, its h_fc will be

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Q370

Open question

Which of the following statements is not true?

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Q371

Open question

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:

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Q372

Open question

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

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Q373

Open question

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:

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Q374

Open question

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

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Q375

Open question

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
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Q376

Open question

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

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Q377

Open question

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
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