1) When the compressive force on a speeder spring is reduced, the propeller blades will Report

coarsen

fine off

remain fixed

2) A hydraulic pitch lock is utilised in a hydromatic propeller to Report

lock out the course pitch oil line in the event of underspeeding

lock out the fine pitch oil line in the event of overspeeding.

prevent the propeller overspeeding in the event of oil supply failure

3) When in the beta range, the propeller pitch is controlled Report

directly from the power lever

indirectly from the power lever

directly from the pitch change mechanism to the PCU

4) The advantage of the beta range is it allows Report

high power settings with higher than normal pitch settings when in flight

low fine pitch settings with high power

low power settings with higher than normal pitch setting for ground manoeuvres

5) If the speeder spring pressure of a CSU(constant speed unit) is increased the blade will Report

fine off

coarsen off

will not move

6) On an underspeed condition the blades are turned to Report

fine

feather

coarse

7) In a hydromatic propeller with counterweights, what is used to make the propeller move to fine pitch? Report

A T M

engine oil

centrifugal force acting on the counterweight.

8) Relaxing tension on the governor spring will result in the blade coarsening and Report

RPM decreasing, manifold pressure increasing

RPM increasing, manifold pressure increasing

manifold pressure constant, RPM decreasing

9) The ground fine pitch stop is Report

never removed

removed on the ground

removed during flight

10) If governor flywheel overcomes the speeder spring, it indicates Report

underspeed

overspeed

onspeed

11) Pitch control using torque measuring is for Report

reducing drag in engine failure

increasing drag

reducing drag in binding

12) If force is applied to the speeder spring, what will happen? Report

Blade angle finer

Blade angle coarsen

Blade angle is frozen in last known position

13) When is superfine pitch used? Report

Landing and takeoff

In cruise

Engine starting to reduce propeller torque loading on starter motor

14) When the flyweights fly outwards in a PCU, this is known as Report

onspeed

overspeed

low power settings with higher than normal pitch setting for ground manoeuvres

15) In an on speed condition, oil in the tube Report

flows in the tubes

flows out of the tubes

remains constant

16) On a reversing propeller moving to the maximum reversing angle, the propeller goes Report

from fine pitch through plane of rotation, course reverse then fine reverse

from course pitch through plane of rotation course, fine reverse then course reverse

from fine pitch through plane of rotation, fine reverse then course reverse

17) If pressure is increased on the speeder spring, rpm increases. What happens to the blade angle? Report

Increases

Decreases

Remains unchanged

18) In a prop with counterweights, what is used to make it move to fine pitch? Report

ATM

Governor oil pressure

Centrifugal force acting on the counterweight

19) If a propeller is in fine pitch and then moves to feather it will pass through Report

coarse

reverse

flight fine only

20) A 'double' acting propeller has Report

oil pressure on one side of piston

oil pressure on two sides of piston

nitrogen or air on one side of piston

EASA Questions Module 17: Propeller Set 3: Pitch Control

Set 1: Fundamentals

Set 2: Propeller Construction

Set 3: Pitch Control

Set 4: Synchronising

Set 5: Ice Protection

Set 6: Maintenance

Set 7: Storage & Preservation