Correct answer
B. actions of operator
Explanation
The correct answer is actions of operator.
For measuring flow by a venturimeter, if should be installed in ________?
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by________?
One of the purposes of sub-cooling the liquid refrigerant is to________?
Rivets are made of following type of material________?
Work done is zero for the following process________?
An open vessel of water is accelerated up an inclined plane. The free water surface will________?