Important Short Questions and Answers: Analog and Digital Instruments

ANALOG AND DIGITAL INSTRUMENTS

1. What is meant by Q-factor?

Q-factor is known as the quality factor. It is used to measure the quality factor of the coils such as inductors, Capacitors etc..

2. What is meant by Q-meter?

Q-meter is generally used to measure the Q-factor of the coil.

3. What are the various types of storage oscilloscopes?

The various types of storage oscilloscopes are

Ø Analog storage oscilloscope

Ø Mesh storage oscilloscope

Ø Bistable phosphor storage oscilloscope

Ø Digital storage oscilloscope

4. What is the DSO?

DSO is known as digital storage oscilloscope, it is used for storing the waveform in a digital form. It consists of a sample and hold circuit, control logic and an A/D converter the waveform can be stored in a buffer amplifier.

5. What are the various types o f Bridges?

Different types of bridges are sh own below.

6. How low resistance is measured?

(a)De Sauty’sbridge

(b) Maxwell’s bridge

(c) Kelvin's double bridge

(d) Wien bridge

7. What are the different types DVM?

(a)Ramp type DVM

(b) Dual slope type integrating ty pe (voltage to time)

(c) Integrating type DVM (volta ge to frequency)

(d) Successive approximation ty pe (SAR)

8. What short notes on DVM?

DVM are measuring instrumen ts that convert analog voltage to signals in to digital or numeric readout.

9. Write the working principle of Q-meter.

The principle of Q-meter is ba sed on series resonance. The voltage drop across the inductor or capacitor is Q times the applied voltage.

10.            What are the advantages of digital instruments?

Ø Readings speed is very hiigh due to digital display.

Ø    They can be programmed and well suited for computerized control.