For the circuit shown in the figure below, consider the diode as an ideal diode & rms value of source voltage as Vs. The output voltage waveform at R will have

For the circuit shown in the figure below, consider the diode as an ideal diode & R.M.S value of source voltage as Vs. The output voltage waveform at R is most likely to have

A

zero value in the positive half cycle and a peak value of 1.414Vs in the negative half cycle

B

sine-wave nature with a peak value 1.414Vs

C

zero value in the negative half cycle and a peak value of 1.414Vs in the positive half cycle

D

sine-wave nature with a peak value Vs

Consider the following statements regarding reciprocity theorem : 1. In any passive linear bilateral network, if the single voltage source Vx, in branch x produces the current response Iy, in branch y, then the removal of the voltage source from branch x and its insertion in branch y will produce the current response iy in branch x. 2. The interchange of an ideal voltage source and an ideal ammeter in any passive, linear, bilateral circuit will not change the ammeter reading. 3. The interchange of an ideal current source and an ideal voltmeter in any passive linear bilateral circuit will change the voltmeter reading. Which of the above statements are correct ?

A

1 and 3 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

A three-winding transformer is connected to an AC source with 50 V rms as shown in the following figure. Voltages induced in the secondary windings are 2 V rms and 8 V rms. The output rms voltage V0 is,

A

-6 V

B

10 V

C

-10 V

D

6 V

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

Consider the following statements: Any element is redundant if connected in a) series with an ideal current source b) parallel with an ideal current source c) series with an ideal voltage source d) parallel with an ideal voltage source Which of the above statements are correct?

A

a and c

B

a and d

C

b and c

D

b and d

Consider the following statements: Any element connected in 1. Series with an ideal current source is redundant. 2. Parallel with an ideal current source is redundant. 3. Series with an ideal voltage source is redundant. 4. Parallel with an ideal voltage source is redundant. Which of the above statements is/are correct?

A

1 only

B

2 and 3

C

2 only

D

1 and 4

In the figure, D1 is a real silicon p-n junction diode with a drop of 0.7 V under forward bias condition and D2 is a Zener diode with breakdown voltage of -6.8 V. The input Vin(t) is a periodic square wave of period T, whose one period is shown in the figure. Assuming 10τ ≪ T, where τ is the time constant of the circuit, the maximum and minimum values of the output waveform are respectively,

A

7.5 V and -20.5 V

B

6.1 V and -21.9 V

C

7.5 V and -21.2 V

D

6.1 V and -22.6 V

In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is

A

3 V

B

27 V

C

19.2 V

D

1.9 V

If k is the duty cycles of the controller, then the rms value of the output voltage in case of a integral cycle control circuit will be? Consider the input to be sinusoidal with peak value Vm and rms value Vs.

A

Vs x k

B

Vs/k

C

Vs x √k

D

Vs

Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds

A

B

C

D

C

For the circuit shown in the figure below, consider the diode as an ideal diode & rms value of source voltage as Vs. The output voltage waveform at R will have

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