GET THE KCSE PREDICTION AVIATION P2MARKING SCHEMES HERE

STATION 1 Bunyore

INSTRUCTIONS

The figure below shows parts of a valve operating mechanism of aeropiston engine. On the drawing paper provided:

(a)        Sketch in good proportion an assembled unit vertically.

(b)        Name at least FIVE parts on the assembled units.      [10 marks]

STATION 2

INSTRUCTIONS

Using the tools, equipment and material provides, make the exhaust Cone as shown in the drawing below.                                                                                                            [10 marks]

STATION 3

INSTRUCTIONS

Identify each of the aircraft hardware numbered and state one use for each.    [10 marks]

            HARDWARE                                                USE

1.         ______________________                _________________________         

2.         ______________________                ___________________________

3.         ______________________                ____________________________

4.         ______________________                ____________________________

5.         ______________________                _____________________________

STATION 4

INSTRUCTIONS

Study the two aircraft models carefully and answer the questions that follow:-

(a)  Classify the two types of aircraft represented by the models and in each case give an     example of such an aircraft.                                                                                               [4 marks]

MODELTYPEEXAMPLE OF REAL AIRCRAFT
A      
B      

(b)    State the operational difference of the two types of aircraft with regards to the following:-                                                                                                                                [4marks]

(i)     Landing

        A …………………………………………………………………………………………….

        B ……………………………………………………………………………………………..

(ii)    Take-off

        A ……………………………………………………………………………………………

        B …………………………………………………………………………………………..

(iii)   Parking Configuration

        A …………………………………………………………………………………………..

        B …………………………………………………………………………………………..

(iv)   Main undercarriage

        A ……………………………………………………………………………………………

        B ……………………………………………………………………………………………

(c)    Explain why design A is not commonly used.                                       [2 marks]

        …………………………………………………………………………………………………….

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Turn over

STATION 5 GET THE KCSE PREDICTION AVIATION P2MARKING SCHEMES HERE

INSTRUCTIONS

(a)    Place the spring provided between the vice jaws endwise.

        Tighten the vice and observe what happens to the spring.

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        (i)       State the type of load the spring is subjected to:

                  …………………………………………………………………………………………….

                  ………………………………………………………………………………………….

        (ii)      State the loading effect on the spring.

                  …………………………………………………………………………………………….

                  ……………………………………………………………………………………….

        (iii)     Relate this loading to an aircraft structure.                                   [4 marks]

                  …………………………………………………………………………………………….

                  ………………………………………………………………………………………….

(b)        Clamp the marked end of the metal plate provided between the vice jaws. Push the

plate at the point marked A and observe what happens.

            (i)         State the two types of load the metal plate is subjected to.

                        …………………………………………………………………………………………….

                        ………………………………………………………………………………………….

            (ii)        State the loading effect on the metal plate.

                        …………………………………………………………………………………………….

                        ………………………………………………………………………………………….

            (iii)       Relate these loadings to aircraft primary control surface.       [6 marks]

                        …………………………………………………………………………………………….

                        …………………………………………………………………………………………….

STATION 6 GET THE KCSE PREDICTION AVIATION P2MARKING SCHEMES HERE

INSTRUCTIONS

(a)    Roll the ball from the bottom of the concave surface of the basin provided.

        (i)     State what happens to the ball.                                                       [1 mark]

        ……………………………………………………………………………………..

        ………………………………………………………………………………………

        (ii)    Explain the relevance of this experiment to an aeroplane in flight. [2 marks]

        ……………………………………………………………………………………………

        ……………………………………………………………………………………………..

(b)    Roll the ball from the top of the convex surface of the basin

        (i)     State what happens to the ball.                                                                   [1mark]

        ……………………………………………………………………………………………       

        …………………………………………………………………………………………..

        (ii)    Explain the relevance of the experiment to an aeroplane in flight. [2 marks]

        ……………………………………………………………………………………………

        ……………………………………………………………………………………………

(c)    Roll the ball on the flat surface provided (table)

        (i)     State what happens to the ball.                                                   [1 mark]

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        ……………………………………………………………………………………………

        …………………………………………………………………………………………….

        (ii)    Explain the relevance of this experiment to an aeroplane in flight. [2 marks]

        ……………………………………………………………………………………………….

        ……………………………………………………………………………………………….

(d)   State which of the above situations (a), (b) and (c) is best suited for an aeroplane in flight.                                                                                                             [1 mark]

……………………………………………………………………………………………………………………………………………………………………………………………………….       

STATION 7 GET THE KCSE PREDICTION AVIATION P2MARKING SCHEMES HERE

INSTRUCTIONS

(a)    Replace the turn buckle provided and wire lock. Let the examiner check your work.

(b)    Name the tool (s) suitable for use the exercise.                                      [10 marks]

STATION 8

INSTRUCTIONS

Connect the components provided as shown in the circuit diagram below. Let the examiner check your work.                                                                                                                          [4 ½ marks]

(a)    Select switch S1 to the ON position and measure the value of the current flowing through bulb B,

        Current: ______________________                                                                              [1 mark]

(b)    With switch S1 in OFF position, measure the value of resistor R1.                                 [1 mark]

        ___________________________________

(c )   Select switch S1 and S2 to the ON position and explain what happens to bulbs B1 and B2.

__________________________________________________________________________________________________________________________________________________________

                                                                                                                                                [2 marks]

(d)   Measure the total circuit resistance.

        _________________________________________________________________________

                                                                                                                                    [1 mark]

(e)    State one application of the circuit in an aircraft.                                                [½ mark]

__________________________________________________________________________________________________________________________________________________________

STATION 9

INSTRUCTIONS

  • Mask the paper on the table in horizontal position.

        Let it flap down on the other end.

  • Blow air over the paper.                                                                        

(a)    Make your observation                                                                                       [2 marks]

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

(b)    State the principle behind this experiment.                                                     [2 marks]

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

(c)    Relate the principle (b) above to an aircraft.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

                                                                                                                                                [6 marks]

STATION 10 GET THE KCSE PREDICTION AVIATION P2MARKING SCHEMES HERE

INSTRUCTIONS

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Study the set up below and answer the questions that follow:

 (a)   (i)     State the observation made before and after the fire cracker is lit.

                Observation:-

                Before ……………………………………………………………………………………..

                After……………………………………………………………………………………..

                                                                                                                                                [2 marks]

        (ii)    State the scientific law that is associated with the observation made in a (i) above.

                                                                                                                                                 [2 marks]

                ………………………………………………………………………………….

(b)    (i)     State why the experiment can only be successful in the innermost and not in the outer

                space.                                                                                                                      [1 mark]

                …………………………………………………………………………………………..

        (ii)    Name a type of an aircraft that has a mechanism to overcome the condition in b (i) above.                                                                                                                                            [1 mark]

                …………………………………………………………………………………………

(c)    Outline two safety measures you would take to ensure the experiment is successful.    [2 marks]

        (i)     ……………………………………………………………………………………….

        (ii)    ……………………………………………………………………………………….

(d)   What is the relevance of this experiment in aviation?                                                      [2 marks]

………………………………………………………………………………………………………………………………………………………………………………………………………………………………

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