Physics
Thermocouple consists of

Metal and a semiconductor
Metal and an insulator
Two dissimilar metals
Two similar metals

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Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

It follows the wave path near the tropopause at elevations of 8 km to 15 km.
In summer, the polar front jet achieves its maximum force.
Jet streams are typically continuous over long distances.
It is narrow band of high-velocity wind.

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Physics
Pressure Cooker cooks faster because

Boiling point decreases with rise of pressure
Higher temperature is attained for cooking
The material of the cooker is a good conductor
It cooks the food at low pressure

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