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A good moderator should...

A good moderator should

A

Low resistivity

B

High metling point

C

Low sensitiveness to temperature

D

All of these

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AAKASH INSTITUTE ENGLISH-CURRENT ELECTRICITY-ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))
  1. What is the range of resistivity of metallic conductors?

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  2. Wire wound resistances used in resistance boxes are made up of

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  3. A good moderator should

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  4. In a carbon resistor the last band colour is missing. Its tolerance is

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  5. A carbon resistor has coloured strips as shown in figure. Its resistan...

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  6. Temperature coefficient of resistance of a wire at 0^(@)C is 0.00125^(...

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  7. In a platinum resistance thermometer resitance of the platinum wire at...

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  8. Coefficient of linear expnsion of material of resistor is alpha . It...

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  9. Which of the following has negative temperature coefficient of resista...

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  10. Two bulbs B(1) and B(2) are used in a household circuit. B(1) glows br...

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  11. Two electric bulbs whose resistances are in the ratio of 1:2 are conne...

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  12. If two bulbs of power 60 W and 100 W respectively each rated 110 V...

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  13. Three bults B(1),B(2) and B(3) of equal resistance are connected as sh...

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  14. In the network shown in the figure, power dissipated in 3Omega and 12 ...

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  15. In a house, individual power of two elements are 10OW and 150 W . Effe...

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  16. How many 60 W bulbs may be safely run on 220 v using a 5 A fuse?

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  17. A cell of emf 16V and internal resistant 4 Omega can deliver maximum ...

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  18. A battery delivers equal power individually across 4 Omega and 16 Ome...

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  19. A heater boils certain amount of water in 15 minutes. Another heater b...

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  20. Minimum resistance obtained from two resistors 3Omega and 2 Omega is

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