Surveying
Normal tension is that pull which

makes the correction due to sag equal to zero
makes the correction due to pull equal to zero
is used at the time of standardising the tape
neutralizes the effect due to pull and sag

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Sidereal day

All listed here
Is the period of time taken by the earth in making a complete rotation with reference to stars
Is slightly shorter than an ordinary solar day
Is divided into the conventional hours, minutes and seconds

ANSWER DOWNLOAD EXAMIANS APP