Measurement of Resistance Location of Cable Faults - Multiple Choice Questions and Answer

Measurement of Resistance Location of Cable Faults - Multiple Choice Questions and Answer Points : measurement of resistance location of cable faults, electrical instruments and measurement, electrical, mcqs, evaluation, objective type question and answer, multiple choice questions and answer 1. The resistance of 100 Kilo-ohms and above falls in the class of....
(a) Low resistance
(b) Medium resistance
(c) High resistance
(d) All of above

2. Wheatstone Bridge is used to measure.
(a) Medium resistance
(b) Low resistance
(c) High resistance
(d) All of above

3. A Bridge is said to be balanced when the current in the Galvanometer is....
(a) Maximum
(b) Minimum
(c) Zero
(d)-ve

4. Kelvin Double Bridge is used for the precise measurement of....
(a) Low resistance
(b) Medium resistance
(c) High resistance
(d) All of above

5. In a Kelvin Double Bridge the resistances of Q, M, q and m are...
(a) Low
(b) Medium
(c) High
(d) Known

6. The operation of Kelvin Double Bridge and Wheatstone bridge in practice is.
(a) Same
(b) Different
(c) Relatively same
(d) Relatively different

7. An ohmmeter is an instrument having....
(a) High degree of accuracy
(b) Medium degree of accuracy
(c) Low degree of accuracy
(d) All of above

8. A shunt type ohmmeter is practically suited for measurement of
(a) Low value of resistance
(b) High value of resistance
(c) Medium value of resistance
(d) Very low value of resistance

9. The resistance of the circuit can not be checked by ohmmeter, when...
(a) Inductance is present
(b) Power is on
(c) Circuit capacitors are charged
(d) Both (b) & (c)

10. When switching ranges of the ohmmeter, readjust pointer to.
(a) Mid point of the scale each time
(b) Infinity point of the scale each time
(c) Zero point of the scale each time
(d) 100 KΩ point of the scale each time

11. When range selector switch of ohmmeter is adjusted at 10 K Ω & the pointer reading is 100Ω, the actual value of resistance will be....
(a) 100/10KΩ
(b) 100X10KΩ
(c) 100-10KΩ
(d) 100+10KΩ

12. Megger is an instrument used for measurement of....
(a) Very low resistance
(b) High resistance
(c) Insulation resistance
(d) Both (b) & (c)

13. The construction of megger consists of...
(a) Deflecting coil
(b) Control coil
(c) Compensating coil
(d) All of above

14. The scale of Megger is calibrated in...
(a) Ohms
(b) Mega-Ohms
(c) Kilo-Ohms
(d) MilIi-ohms.

15. Megger can be operated for...
(a) Continuity test
(b) Short circuit test
(c) Open circuit test
(d) All of above

17. The earth tester is a special type of megger which sends...
(a) AC. Through measuring instrument & D.C. through earth.
(b) A.C. through earth & D.C. through measuring instruments
(c) A.C. through both
(d) D.C. through both

18. These are the common types of faults in cable...
(a) Ground faults
(b) Short circuit faults
(c) Open circuit faults
(d) All of above

19. Loop tests are employed to locate the
(a) Earth faults
(b) Short circuit faults
(c) Both (a) & (b)
(d) Simple faults

20. Blavier and Earth overlap tests are employed to locate...
(a) Short circuit faults
(b) Open circuit faults
(c) Both (a) & (b)
(d) Ground fault on a single cable

21. In Blavier and Earth overlap tests the resistance between the fault and the end is determined by....
(a) Using the known value of resistance per unit length
(b) Using the known value of Impedance
(c) Using the known value of Inductance
(d) Using the known value of Capacitance