Engine Performance. Test 9

Why is this connecting rod eye split obliquely?

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

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

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

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

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

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

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

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

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

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

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

What is the purpose of part number 2 ?

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

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

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

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

Review Answers

Engine Performance. Test 9

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