Which of the following has negative temperature coefficient?

A. Carbon

B. Nickel

C. Brass

D. Constantan

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  1. What is a closed path made of several branches of the network called?
  2. What is the other name of relative permittivity?
  3. Of the equivalent combination of unitsa which one is not equal to watt?
  4. In an ac circuita the power dissipated as heat depends on
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    An impedance given by 90 -45 is a/an ___ impedance.
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  15. An alloy composed of 84 % coppera 12 % manganese and 4 % nickel.
  16. Transient period is considered over after
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  18. The reason why electrical appliances are connected in parallel.
  19. The ratio of maximum value to the effective value of an alternating quantity is called
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  21. The resistance of an insulator ___ when its temperature is increased.
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  23. Capacitance increase with
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  25. An ac series circuit is composed of a resistance of 20 a inductive reactance of 40 a and a capacitive…
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  27. If two equal resistances connected in series across a certain supply are now connected in parallel across…
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