ENGINE INSTRUMENT SYSTEM

On a twin engine aircraft with fuel-injected reciprocating engines, one fuel-flow indicator reads considerably higher than the other in all engine operating configurations. What is the probable cause of this indication?

• Carburetor icing

• One more fuel nozzles are clogged

• Alternate air door stuck open

The principal fault in the pressure type fuel flowmeter indicating system, installed on a horizontally opposed continuous-flow fuel injected aircraft reciprocating engine, is that a plugged fuel injection nozzle will cause a

• Normal operation indication

• Lower than normal fuel flow indication

• Higher than normal fuel flow indication

A manifold pressure gauge is designed to

• Maintain constant pressure in the intake manifold

• Indicate differential pressure between the intake manifold and atmospheric pressure

• Indicate absolute pressure in the intake manifold

A complete break in the line between the manifold pressure gauge and the induction system will be indicated by the gauge registering

• Prevailing atmospheric pressure

• Zero

• Lower than normal for conditions prevailing

Thermocouple leads

• May be installed with either lead to either post of the indicator

• Are designed for a specific installation and may not be altered

• May be repaired using solderless connectors

The EGT gauge used with reciprocating engines is primarily used to furnish temperature readings in order to

• Obtain the best mixture setting for fuel efficiency

• Obtain the best mixture setting for engine cooling

• Prevent engine over temperature

Engine oil temperature gauges indicate the temperature of the oil

• Entering the oil cooler

• Entering the engine

• In the oil storage tank

Basically, the indicator of a tachometer system is responsive to change in

• Current flow

• Frequency

• voltage

The purpose of an exhaust gas analyzer is to indicate the

• Brake specific fuel consumption

• Fuel/air ratio being burned in the cylinders

• Temperature of the exhaust gases in the exhaust manifold

Instruments that provide readings of low or negative pressure, such as manifold pressure gauges, are usually what type?

• Vane with calibrated spring

• Bourdon tube

• Diaphragm or bellows