Questions

"The moon smiled at me" is the example of personification in the given options.

Personification is a technique in which we give objects human traits like emotions, gestures, speech,... by using metaphor. 

Here moon is an object which cannot smile but using metaphor sense, we gave that sense to it.

Most people say "Yes" and do not add more to it. Use this opportunity to market yourself and express interests and activities that are aligned with job role you are applying.

A dynamometer wattmeter can be used for measuring both A.C and D.C currents.

I am black gold i.e charcoal. It is black when it is not used and when using it is red due to fire and when used it is in grey color as it becomes ash.