For the rectifier circuit shown in the figure, the sinusoidal voltage (V1 or V2) at the output of the transformer has a maximum value of 10 V. The loadresistance RL, is 1 k$$\Omega $$. If lav is the average current through the resistor RL, the circuit corresponds to a <img src="/images/question-image/engineering-physics/electronics/1689747427-for-the-rectifier-circuit-shown-in-the.png" title="Electronics mcq question image" alt="Electronics mcq question image">

A sinusoidal input voltage V_in of frequency ω is fed to the circuit shown in the figure, where C₁ ≫ C₂. If V_m is the peak value of the input voltage, then output voltage (V_out) is
Electronics mcq question image

A

$$2{V_m}$$

B

$$2{V_o}\sin \omega t$$

C

$$\sqrt 2 {V_m}$$

D

$$\frac{{{V_m}}}{2}\sin \omega t$$

Referring to the given circuit, the voltage and current for the load resistor, RL, is
Circuit Theorems and Conversions mcq question image

A

450 mV, 4.5 mA

B

4.50 V, 45 mA

C

4.50 V, 4.5 mA

D

450 mV, 45 mA

Match the following: (i) Half wave rectifier p) Transformer not required (ii) Full wave rectifier q) Centre tap transformer required (iii) Full wave bridge rectifier r) Ordinary transformer required

A

(i)-p, (ii)-q, (iii)-r

B

(i)-r, (ii)-q, (iii)-p

C

(i)-q, (ii)-p, (iii)-r

D

(i)-r, (ii)-p, (iii)-q

Referring to circuit given, if R1 is changed to a 68 Ω resistor, what will be the current through it?
Circuit Theorems and Conversions mcq question image

A

0.16 A

B

0.24 A

C

0.2 A

D

0.04 A

A step-down delta-star transformer, with per-phase turns ratio of 5 is fed from a 3-phase 1100 V source. The secondary of this transformer is connected through a 3-pulse type rectifier, which is feeding an R load. The power delivered to the load is 6839.3 Watts. The maximum value of the load current is √2 x 22 A. Fin, the rms value of output voltage Vo (rms)

A

257.3 V

B

220 V

C

261.52 V

D

248.32 V

In the circuit shown in the figure, the Thevenin voltage V_Th and Thevenin resistance R_Th as seen by the load resistance R_L (= 1 k$$\Omega $$) are respectively
Electronics mcq question image

A

15 V, 1 k$$\Omega $$

B

30 V, 4 k$$\Omega $$

C

20 V, 2 k$$\Omega $$

D

10 V, 5 k$$\Omega $$

The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)

A

6.8 kΩ

B

2.2 kΩ

C

6.8 kΩ and 10 kΩ

D

2.2 kΩ and 1 kΩ

The figure shows a constant current source charging a capacitor that is initially uncharged.
Electromagnetic Theory mcq question image

If the switch is closed at t = 0, which of the following plots depicts correctly the output voltage of the circuit as a function of time?

A

B

C

D

Which of the following statements are correct for an ideal constant voltage source? 1. Its output voltage remains absolutely constant whatever the change in load current. 2. It possesses zero internal resistance so that internal voltage drop in the source is zero. 3. Output voltage is provided by the source would remain constant irrespective of the amount of current drawn from it. 4. Output voltage provided by the source varies with the amount of current drawn from it.

A

1, 2 and 4 only

B

1, 3 and 4 only

C

2, 3 and 4 only

D

1, 2 and 3 only

A certain series circuit consists of a $$\frac{1}{8}$$ W resistor, a $$\frac{1}{4}$$ W resistor and a $$\frac{1}{2}$$ W resistor. The total resistance is 1200 Ω. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is

A

27 mA

B

2.7 mA

C

19 mA

D

190 mA

For the rectifier circuit shown in the figure, the sinusoidal voltage (V₁ or V₂) at the output of the transformer has a maximum value of 10 V. The loadresistance R_L, is 1 k$$\Omega $$. If l_av is the average current through the resistor R_L, the circuit corresponds to a

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