MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Given that the charging current of capacitor is constant in a monostable multivibrator using IC 555, then find the type of output waveform, type of capacitor voltage waveform and the time period of output. |
| A. | The capacitor waveform is a ramp, the output waveform is sinusoidal, the time period is ( frac{2.C.VCC}{3.I} ) |
| B. | The capacitor waveform is a ramp, the output waveform is a pulse, the time period is ( frac{2.C.VCC}{3.I} ) |
| C. | The capacitor waveform is a ramp, the output waveform is a pulse, the time period is ( frac{C.VCC}{3.I} ) |
| D. | The capacitor waveform is a ramp, the output waveform is a ramp, the time period is ( frac{2.C.VCC}{3.I} ) |
| Answer» C. The capacitor waveform is a ramp, the output waveform is a pulse, the time period is ( frac{C.VCC}{3.I} ) | |
| 2. |
How can a monostable multivibrator using IC 555 be used as a PWM generator? |
| A. | If a diode is connected across the resistor RA |
| B. | If a modulating signal m(t) is applied at the control pin |
| C. | If the control pin is always kept high |
| D. | It cannot be used as a PWM generator ever |
| Answer» D. It cannot be used as a PWM generator ever | |
| 3. |
In the astable multivibrator using IC 555, it can be used as a voltage to frequency converter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Find the approximate frequency of output waveform of a monostable multivibrator given that RC = 20 10-3 and feedback factor = 0.3. |
| A. | 200Hz |
| B. | 142Hz |
| C. | 233Hz |
| D. | Can t be found out without supply voltage value |
| Answer» C. 233Hz | |