Engineering, Control Systems. Test 37

The feedwater valve and the feedwater by-pass valves are _____

electronic controlled valves working in opposition.
electronic controlled valves working in tandem.
pneumatic controlled valves working in opposition.
pneumatic controlled valves working in reverse.

Suppose that in the system drawn the water inflow Q1 increases so that the float is pushed up by the water to level L'. The value of level L' is called the _____

measured value.
actual value.
increased value.
level value.

What kind of valve is valve A, shown in the left bottom ?

A spring loaded solenoid valve, activation to close.
An hydraulic control valve, pressure to open.
A pneumatic control valve, air to close.
An electric motor driven control valve.

What components of the Lubricating Oil Control System are shown here ?

Cooler temp indicator, transmitter, electric control valve.
Temperature controller, indicator, pneumatic control valve.
Temperature transmitter and controller, pneumatic control valve.
Temperature recorder, transmitter, electronic control valve.

As part of an automation schematic drawing, what kind of instrument might be fitted on the measuring line as indicated on the top centre drawing ?

A Low Pressure cut-out.
A line capacitor.
A limit control switch.
A level controller.

If the engine room is in UMS mode and one of the measuring points collected by a LSU and fed into the CPU exceeds its preset value parameter, the CPU will _____

activate the LAD in operation and its visible and audible alarm will set off.
activates all of these.
activate the MAD (main Alarm Display) and Visible and Audible alarms will be activated.
activate the TWM (Type Writer Monitor) and print out the obtained error value, measuring point number and time.

How is expansion allowed for in large diesel engine exhausts?

By sliding securing mounts.
By the fitting of steel bellows pieces.
By the selection of materials and construction to minimize expansion.
By sliding section of piping.

When using a parting tool in the centre lathe what prevents it from binding?

Increasing front clearance.
Increasing top rake angle.
Providing side and body clearance.
Tool slightly angled to work piece.

Review Answers