When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.

When a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to

A

24 V

B

15.12 V

C

20.64 V

D

12 V

When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to

A

15 V

B

12.9 V

C

8.6 V

D

19.45 V

A single 6 V pulse with a width of 600 μs is applied to an integrator consisting of a 150 kΩ resistor and a 0.002 μF capacitor. To what voltage will the capacitor charge?

A

0 V

B

3.78 V

C

5.16 V

D

6 V

The charges for a five-day trip by a tourist bus for one full ticket and a half-ticket are Rs. 1440 inclusive of boarding charges which are same for a full ticket and a half-ticket. The charges for the same trip for 2 full tickets and one half-ticket inclusive of boarding charges are Rs. 2220. The fare for a half-ticket is 75% of the full ticket. Find the fare and the boarding charges separately for one full ticket.

A

Rs. 580, Rs. 400

B

Rs. 280, Rs. 200

C

Rs. 480, Rs. 300

D

Rs. 380, Rs. 400

An integrator consists of a 3.3 kΩ resistor and a 2 μF capacitor. A single 30 V, 6 ms pulse is applied to the input. How much will the capacitor charge?

A

10.3 V

B

30 V

C

12.09 V

D

17.91 V

In case of a single-pulse width modulation with the pulse width = 2d, to eliminate the 5th harmonic from the output voltage waveform, the value of the pulse width (2d) must be equal to

A

72°

B

86°

In case of a single-pulse width modulation with the pulse width = 2d, to eliminate the 3rd harmonic from the output voltage waveform, the value of the pulse width (2d) must be

A

0°

B

60°

One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output’s relation with the inputs?

A

The exclusive-OR output is a 20 s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses

B

The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses

C

The exclusive-OR output is a 15 s pulse followed by a 40 s pulse

D

The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, followed by a 40 s pulse

In an integrator, when the pulse width of the input is much less than the transient time, the output voltage approaches the shape of the input.

A

True

B

False

Figure shows a practical integrator with R_s = 30 M$$\Omega $$, R_F = 20 M$$\Omega $$ and C_F = 0.1 μF. If a step (DC) voltage of+3 V is applied as input for 0 ≤ t ≤ 4 (t is in second), the output voltage is
Electronics mcq question image

A

a ramp function of -6 V

B

a step function of -12 V

C

a ramp function of -15 V

D

a ramp function of -4 V

When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.

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