Engine Performance. Test 9

The basic type of reversing air starting system that can be used only on two-stroke, ported, direct coupled, propulsion Diesel engines is the _____

distributor type.
rotating camshaft.
sliding camshaft.
reversing latch.

What is the purpose of part number 2 ?

To reduce the bowl speed to adapt to the type of liquid.
To prevent clean liquid mixing with the in-coming dirty liquid.
To keep the liquid separated.
To accelerate the liquid to the same speed as the bowl.

To find the indicated power developed in the cylinder the indicator card is used to determine the _____

mean effective pressure.
compression pressure.
mean height of the diagram.
firing pressure.

Why is this connecting rod eye split obliquely?

To allow the piston/connecting rod to pass through the liner.
To allow access to both of the bolts and bearing from one side of the engine.
To avoid setting up unecessary stress in the rod eye.
To decrease the bottom end bolt shock loading.

From this drawing of a pneumatic pressure transmitter, what is the Proportional Band setting ?

Proportional Band less than 100 %, amplification K more than 1
Proportional Band = 100 %, amplification K = 1
Proportional Band more than 100 %, amplification K less than 1
Proportional Band 0%, amplification infinitive

The flow through this heat exchanger is determined by the 'Reynolds number'. Depending on certain factors, this allows the system designer to select either _____

parallel flow or turbulent flow.
streamline flow or contra flow.
turbulent flow or laminar flow.
parallel flow or contra flow.

Which of the following is a record of the pressure existing in the cylinder at various positions of the piston throughout the engine cycle ?

An Indicator diagram.
A Temperature diagram.
A Timing diagram.
a Cycle diagram.

What is the function of valve V in relation to the outlet pressure Pu of this pneumatic amplifier

To push spring S open via the ball B
To transmit the pressure Pu to the membrane
To allow stabilising feedback pressure on the membrane
To allow venting of pressure Pu to the atmosphere

What method is employed in the design of waste heat boilers to obtain maximum heat transfer while maintaining low overall weight ?

Feedwater is preheated in a separately fired economizer.
Steel fins are installed on the generating tubes to increase the effective surface area.
An unfired exhaust gas preheater is added to increase the heat transfer rate.
An external superheated unit is located above the boiler to the gas passages.

Review Answers

Engine Performance. Test 9

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