Chapter 6 Special Instruments MCQs

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1. Instrument transformer is used for





2. Types of Instrument transformer are





3. The advantage of using instrument transformer is





4. Secondary current of current transformer is usually





5. Secondary voltage of voltage transformer is usually





6. Number of primary turns of a current transformer are





7. Sometimes this is used as primary winding of a current transformer





8. If primary current is more than 100 amperes, then its core is made in this shape





9. This bears more resemblance to power transformer





10. Clamp on meter is basically a





11. Ratio error of a CT means that the secondary current (with reference to the turn ratio) becomes





12. A C.T has few ampere turns, so its weight may be





13. Usually it is attached with clamp on meter





14. The ratio between rated primary current and rated secondary current of a C.T is called





15. Transformation ratio received in case of loaded C.T is called





16. The ratio between actual and nominal transformation ratio is called





17. Burden of a C.T is stated in





18. Rated burden of a C.T may be





19. Phase angle of a C.T depends upon





20. Reason of phase angle error in a C.T is





21. Phase angle error of a C.T can be reduced by





22. To reduce the ratio error in C.T





23. C.T may be of this type





24. Secondary current of a C.T depends upon





25. By increasing the secondary current of C.T, its error will





26. By increasing the burden of a C.T, its errors will





27. If primary current of a C.T is very small then





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