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Electrical Measurement MCQ Question Set 1

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1. Accuracy of bridge circuit depends on _____




2. What happens to the balance condition, if the source and detector are interchanged?




3. The simplest type of bridge used for the measurement of medium resistances is known as ______




4. How is the measurement accuracy in a bridge circuit?




5. The bridge circuit can be used in _______




6. Commonly used D.C. bridges are ____




7. In control applications, one arm of the bridge circuit contains a _____




8. What are the physical parameters that are to be controlled when a bridge is used in control applications?




9. Wheatstone bridge consists of ______




10. A galvanometer is used as a _____




11. The opposite two ends of a Wheatstone bridge consist of ____




12. The arms consisting of the resistances R1 and R2 are called _____




13. The arm consisting of the standard known resistance R3 is known as _______




14. Resistance R4 is known as _______




15. What is connected between the two ends of a Wheatstone bridge?




16. Wheatstone bridge works on the principle of _____




17. The balance condition of a Wheatstone bridge depends on the _____




18. Balance condition can be obtained by _______




19. When the bridge is balanced, what is the current flowing through the galvanometer?




20. Amount of deflection of the galvanometer depends on ______




21. Sensitivity is defined as _____




22. Sensitivity is expressed in ____




23. What is the relation between the sensitivity and deflection for a galvanometer?




24. The voltage sensitivity of a galvanometer is given by ______




25. Unit of voltage sensitivity is ______




26. The Wheatstone bridge is used for the measurement of ______




27. The source of error in a Wheatstone bridge is due to _____




28. What is the main source of error in a null detector?




29. When current passes through the resistances in the Wheatstone bridge what happens?




30. What is the effect of the increase in temperature on the resistance elements?




31. Heating effect in the Wheatstone bridge can be avoided by ______




32. The main error when measuring low resistances is _____




33. How is thermal emf generated?




34. Thermal emf can be prevented by _______




35. Wheatstone bridge is a ________




36. Wheatstone bridge is used to measure resistance in the range of _____




37. Wheatstone bridge is used to measure the d.c. resistance of various types of wires for _____




38. Telephone companies make use of the Wheatstone bridge for ______




39. The types of faults in a telephone line are ________




40. How can a Wheatstone bridge be used for the measurement of physical parameters?




41. By using the variations on a Wheatstone bridge we can _______




42. One of the simplest applications of a Wheatstone bridge is _____




43. Thermal compensation can be provided in a Wheatstone bridge by ____




44. Wheatstone bridge can’t be used for measurement of _____




45. Cost of maintenance of Wheatstone bridge is ______




46. What is the effect of galvanometer on measurement of high resistance?




47. What is the effect of heat on the resistances in a Wheatstone bridge?




48. Effect of high dc on Wheatstone bridge.




49. A Wheatstone bridge may not give accurate readings if _______




50. What is the effect of lead wires on the Wheatstone bridge?