Electrical & Electronics / Measurements & Instrumentation important question/question bank for Elect

[Ranjith.ds]

Hi friends,

Below you can find some important questions for the subject Electrical & Electronics / Measurements & Instrumentation. These questions will help you prepare better for your semester exams.

Very Short Answer type questions:

1. What do you mean by errors ?
2. Name two types of moving Iron instru- ments.
3. Watt meter measures active / reactive power (T/F)
4. What do you mean by maximum demand indicator
5. What is meggar.
6. What do you mean by instrument transformer.
7. What is CRO ?
8. Name the bridge used to measure inductance.
9. Kw = Kva X cos f (True / False)
10. What is thermo couple.
11. Multimeter can measure ___
12. Range of ammeter can be extended by using __
13. A CRO is used to observe frequency of signal. (T/F)
14. Resistance of earthing electrode is low (True/ False)
15. What is the function of LCR meters.
16. What is RTD.
17. What is V.T. V.M
18. What is relation of phase current and line current in case star connections.

Short answer type questions:

1. Give classification of instruments as per their functions.
2. Explain with diag. How can you extend range of ammeter
3. List the errors take place in dynamo- meter type watt meter
4. What is creeping error of energy meter and how it is avoided.
5. Draw single phase dynomometer type power factor meter.
6. List classification of current transformer as per construction
7. Draw a circuit diagram showing use of ammeter voltmeter and watt meter.
8. What are the specifications of digital multimeter.
9. What are the major applications of CRO
10. What are LCR meters ? Discuss their applications.
11. Explain in brief function of earth tester.
12. Give difference between star and delta connection.
13. What are the basic requirements of a conductor material to be used in RTD
14. Explain absolute and secondary instru- ments.
15. What do you mean by low, medium and high resistance.

Long answer type questions:

1. Draw block of diag of CRO. Also explain function of each block in detail.
2. Explain construction, working principle of meggar. Also state its use.
3. What do you mean by moving iron instru- ments. Explain with diag. The attraction type moving iron instrument.
4. Explain two watt meter method to measure power in three phase unbalanced load.
5. Explain construction, working of a LVDT with neat sketch.