Integrated Circuits Test Questions Start Creating PDF

MCQ: Which among the following are regarded as three-pin voltage regulator ICs?

1. Fixed voltage regulators
2. Adjustable voltage regulators
3. Both a and b
4. None of the above

MCQ: Due to operation of series pass transistor in an active region of linear voltage regulator, ___________

1. The ripple contents in o/p voltage waveform is very low
2. Then there is no necessity of using high speed transitor
3. Both a and b
4. None of the above

MCQ: Which type of IC voltage regulator exhibits continuous variation in the impedance of transistor in order to supply the desired load current?

1. Linear regulators
2. Switching regulators
3. Both a and b
4. Both a and b

MCQ: In LM317 voltage regulator, what is the minimum value of voltage required between its input & output in order to supply power to an internal circuit?

1. 1V
2. 3V
3. 5V
4. 10V

MCQ: In LM317 voltage regulator, the protective diodes do not allow the filter capacitors to discharge through ______current points.

1. High
2. Low
3. Both a and b
4. None of the above

MCQ: In AM detector using PLL, the phase detector is basically a multiplier which produces ________components of frequencies at its output.

1. Sum
2. Difference
3. Both a and b
4. None of the above

MCQ: In VCO IC 566, the value of charging & discharging is dependent on the voltage applied at ______.

1. Triangular wave output
2. Square wave output
3. Modulating input
4. All of the above

MCQ: According to transfer characteristics of PLL, the phase error between VCO output & incoming signal must be maintained between _______ in order to maintain a lock.

1. 0 & π
2. 0 & π/2
3. 0 & 2π
4. π & 2π

MCQ: Which characteristic of PLL is defined as the range of frequencies over which PLL can acquire lock with the input signal?

1. Free-running state
2. Pull-in time
3. Lock-in range
4. Capture range

MCQ: In ADC 0809 acting as a CMOS device, how many analog inputs & channel multiplexers are present?

1. 2
2. 4
3. 8
4. 16