17.1.4

NOTE

TO CHECK YOUR PREPARATION ,PLZ WRITE DOWN THE SELECTED OPTIONS ON ROUGH PAGE AND  AT THE END OF QUIZ , VERIFY YOUR SELECTED OPTION WITH THE CORRECT OPTIONS GIVEN BELOW

Question number. 21. As propeller rotation speed increases the centrifugal turning moment on the blades will.

Option a. Increase.

Option b. Decrease.

Option c. Remain constant through r. P. M. Range.

. Question number. 22. Propeller torque is the resistance offered by the propeller to.

Option a. Feathering.

Option b. Changing pitch.

Option c. Rotation.

Question number. 23. The angle between the resultant airflow direction and the propeller blade plane of rotation is known as.

Option a. Angle of attack.

Option b. Blade angle.

Option c. Helix angle or angle of advance.

Question number. 24. At constant rpm, advance per revolution depends on.

 Option a. Shp.

Option b. Forward speed.

Question number. 25        . Aerodynamic twisting moment.

Option a. Turns the blade to windmill.

Option b. Turns the blades to high pitch.

Question number. 26        . Under normal operation the point of maximum stress on a propeller blade is at the.

Option a. Root.

 question number. 27        . Propeller blade angle.

Option a. Is constant along the blade length.

Option b. Decreases from root to tip.

Option c. Increases from root to tip.

Question number. 28. Coarse pitch is used for.

Option a. Take off and climb.

Option b. Maximum economical cruise in level flight.

Option c. Landing and power checks.

 Question number. 29. Effective pitch is.

Option a. Distance moved in one revolution.

Option b. Geometric pitch plus slip.

Option c. Pitch measured at the master station.

Question number. 30. A windmilling propeller has.

Option a. A small positive blade angle.

Option b. A small positive angle of attack.

Option c. A small negative angle of attack.

ABOVE QUESTIONS WITH ANSWERS 

Question number. 21. As propeller rotation speed increases the centrifugal turning moment on the blades will.

Option a. Increase.

Option b. Decrease.

Option c. Remain constant through r. P. M. Range.

Correct answer is. Increase.

. Question number. 22. Propeller torque is the resistance offered by the propeller to.

Option a. Feathering.

Option b. Changing pitch.

Option c. Rotation.

Correct answer is. Rotation.

Question number. 23. The angle between the resultant airflow direction and the propeller blade plane of rotation is known as.

Option a. Angle of attack.

Option b. Blade angle.

Option c. Helix angle or angle of advance.

 Correct answer is. Helix angle or angle of advance.

Question number. 24. At constant rpm, advance per revolution depends on.

 Option a. Shp.

Option b. Forward speed.

 Correct answer is. Forward speed.

Question number. 25        . Aerodynamic twisting moment.

Option a. Turns the blade to windmill.

Option b. Turns the blades to high pitch.

Correct answer is. Turns the blades to high pitch.

Explanation. Jepperson a&p powerplant page 12/6 refers.

Question number. 26        . Under normal operation the point of maximum stress on a propeller blade is at the.

Option a. Root.

  Correct answer is. Root.

 question number. 27        . Propeller blade angle.

Option a. Is constant along the blade length.

Option b. Decreases from root to tip.

Option c. Increases from root to tip.

Correct answer is. Decreases from root to tip.

Question number. 28. Coarse pitch is used for.

Option a. Take off and climb.

Option b. Maximum economical cruise in level flight.

Option c. Landing and power checks.

 Question number. 29. Effective pitch is.

Option a. Distance moved in one revolution.

Option b. Geometric pitch plus slip.

Option c. Pitch measured at the master station.

Question number. 30. A windmilling propeller has.

Option a. A small positive blade angle.

Option b. A small positive angle of attack.

Option c. A small negative angle of attack.