1. Define the following terms as applied to the measuring instrument: Sensitivity
Accuracy
Linearity
Dead zone
Backlash

2. Explain briefly any two of the following systematic errors with examples:

(a) instrumental Errors Environmental Errors Observational Errors

3. Explain the working principle of a moving iron indicating instrument. Show that this type of instrument can be used for DC and AC measurement. Also indicate the errors involved.

4. Draw the circuit diagram and explain the principle of operation of a rectifier type voltmeter employing a bridge rectifier.

5. Explain briefly any two of the following transducers: Self-generating variable inductance transducer Variable reluctance transducer Linear-variable-differential transformer (LVDT)

6. The output of an LVDT is connected to a 4 V voltmeter through an amplifier whose amplification factor is 500. An output of 1·8 mV appears across the terminals of LVDT when the core moves through a distance of 0·6 mm. If the millivoltmeter scale has 100 divisions and the scale can be read to 1/4 of a division, calculate sensitivity of the LVDT, and the resolution of the instrument in mm.

7. How are telemetry systems classified Discuss briefly the working of a general telemetering system, with the help of a block diagram.

8. Write short notes on any two of the following Potentiometer Type Recorder

(b) Circular Chart Recorders

(c) X-Y Recorders

9. Explain the following with neat diagrams:

(a) Sweep Generator
Frequency Synthesizer