The diagram above shows a lift pump with valves at P and ...
The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston
A.
both valves are open
B.
P is open while Q is closed
C.
P is closed while Q is open
D.
Both valves are closed
Correct answer is B
No explanation has been provided for this answer.
Similar Questions
A magnet relay is a device used for? ...
On a stationary sail boat, air is blown from a fan attached to the boat. The boat ...
The instrument that measures both a.c and d.c is? ...
A lamp is rated 240V 60W, calculate the resistance of its filament ...
Which of the following properties makes metals ideal for cooking utensils? ...