In a domestic cake baking oven the temperature is controlled by

(a)     voltage variation
(b)     thermostat
(c) auto-transformer
(d) series-parallel operation
Ans: d

2 comments:

  1. c.thermostat is the answer given in one of the book by gkpublications.which is right?

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  2. thermal conductivity least for ...
    a.air b.glass, c.water, d.copper

    ReplyDelete