Related Questions

Three valves, when opened individually, can drain the water from a certain tank in 3,4 and 5 minutes respectively . What is the greatest part of the tank that can be drained in one minute by opening just two of valves?
A 7/12
B 4
C 5
D 7
Three valves when opened individually, can drain the water from certain tank in 3, 4 and 5 minutes respectively, What is the greatest part of the tank that can be drained in one minute by opening just two of valves.
A 712
B 12
C 14
D 15
When drain voltage equals the pinch-off-voltage, then drain current ___________ with the increase in drain voltage
A decreases
B increases
C remains constant
D none of the above
Foot valves provided in pumps are __________ valves.
A Relief
B Three/four way
C Pressure reducing
D Directional control
A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
Scour valves are provided
A At street corners to control the flow of water
B At every depression and dead ends to drain out the waste water that may collect there
C At the foot of rising main along the slope to prevent back running of water
D At every summit of rising mains
Foot valves are provided in the suction line of a centrifugal pump to
A Avoid priming, every time we start the pump
B Remove the contaminant present in the liquid
C Minimise the fluctuation in discharge
D Control the liquid discharge
Safety valves are provided in chemical equipments to guard against excessive
A Temperature
B Pressure/pressure fluctuation
C Turbulence
D Noise
The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as
A Sloping drain
B Catch-water drain
C Side drain
D Cross drain
The trap which is provided to disconnect the house drain from the street sewer is called
A Master trap
B Intercepting trap
C Interception manhole
D All the above

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