EASA Module M14: Propulsion Practice Questions

1. What is the primary function of a jet engine?
a) Produce rotational energy
b) Produce thrust ✅
c) Convert electrical energy

2. What is the Brayton cycle associated with?
a) Reciprocating engines
b) Gas turbine engines ✅
c) Rocket engines

3. What is the main purpose of the compressor in a gas turbine engine?
a) Increase airflow velocity
b) Increase airflow pressure ✅
c) Decrease temperature

4. What type of turbine drives the fan in a high-bypass turbofan engine?
a) High-pressure turbine
b) Low-pressure turbine ✅
c) Intermediate-pressure turbine

5. Which section of a jet engine is responsible for adding heat to the airflow?
a) Compressor
b) Combustion chamber ✅
c) Turbine

6. What is the typical fuel used in jet engines?
a) Gasoline
b) Jet-A1 ✅
c) Diesel

7. The purpose of an exhaust nozzle in a jet engine is to?
a) Reduce pressure
b) Increase thrust ✅
c) Cool the exhaust gases

8. What is the primary purpose of a thrust reverser?
a) Reduce engine noise
b) Help slow the aircraft ✅
c) Improve fuel efficiency

9. In a turboprop engine, the majority of thrust is produced by?
a) The propeller ✅
b) The exhaust gases
c) The turbine

10. What is a common method of starting a gas turbine engine?
a) Electric starter motor ✅
b) Hydraulic pump
c) Pneumatic compressor

11. What is "spool" in the context of gas turbine engines?
a) A single rotor shaft ✅
b) The combustion process
c) The exhaust system

12. What is the function of an accessory gearbox in a jet engine?
a) Increase thrust
b) Drive auxiliary components ✅
c) Increase fuel efficiency

13. The term "N1" in a turbofan engine refers to?
a) Fan speed ✅
b) High-pressure turbine speed
c) Compressor inlet temperature

14. What does EGT stand for in propulsion systems?
a) Exhaust Gas Temperature ✅
b) Engine Ground Test
c) Energy Gas Transfer

15. What is the primary purpose of an afterburner?
a) Reduce emissions
b) Provide additional thrust ✅
c) Improve fuel efficiency

16. The bypass ratio of an engine is the ratio of?
a) Compressor air to exhaust air
b) Bypass air to core air ✅
c) Fuel flow to air flow

17. What is the primary function of the diffuser in a jet engine?
a) Decrease air velocity ✅
b) Increase air pressure
c) Both a and b

18. What does the main purpose of the igniter plug in a jet engine?
a) To sustain combustion
b) To initiate combustion ✅
c) To regulate fuel flow

19. What type of propulsion system is used in rockets?
a) Jet propulsion
b) Solid or liquid fuel propulsion ✅
c) Electric propulsion

20. Which engine type is most efficient at subsonic speeds?
a) Turbojet
b) Turbofan ✅
c) Turboprop

Read More

EASA Module M4: Electronics Practice Questions

1. What is the function of a transistor?
a) Convert AC to DC
b) Amplify or switch electronic signals ✅
c) Measure resistance

2. What is the primary purpose of a rectifier circuit?
a) Generate AC
b) Convert AC to DC ✅
c) Store charge

3. Which component is used to store electrical energy in an electric field?
a) Resistor
b) Inductor
c) Capacitor ✅

4. What is the purpose of a Zener diode?
a) Allow current in one direction
b) Stabilize voltage ✅
c) Amplify current

5. The basic logic gate that performs the AND function has an output of 1 when:
a) Both inputs are 1 ✅
b) Both inputs are 0
c) Either input is 1

6. Which material is commonly used in semiconductor devices?
a) Copper
b) Silicon ✅
c) Iron

7. What does the term "biasing" in a transistor mean?
a) Amplification of signals
b) Applying external voltage to establish operating conditions ✅
c) Regulating temperature

8. Which of the following is a unipolar device?
a) Diode
b) MOSFET ✅
c) Bipolar Junction Transistor (BJT)

9. The unit of inductance is:
a) Farad
b) Henry ✅
c) Ohm

10. What is the primary purpose of an operational amplifier?
a) To amplify signals ✅
b) To convert AC to DC
c) To filter frequencies

11. What is a printed circuit board (PCB)?
a) A board used for soldering components ✅
b) A device for amplifying signals
c) A type of power supply

12. What is the output of a NOT gate when the input is 1?
a) 0 ✅
b) 1
c) Cannot determine

13. Which of the following is a passive component?
a) Diode
b) Transistor
c) Resistor ✅

14. The most common type of filter used in electronic circuits is:
a) Band-pass filter
b) Low-pass filter ✅
c) High-pass filter

15. What is the main function of a voltage regulator?
a) Measure voltage
b) Maintain constant output voltage ✅
c) Convert AC to DC

Read More

EASA Module M3: Electrical Fundamentals Practice Questions

 1. What is the unit of electric current?

a) Volt
b) Ampere ✅
c) Ohm

2. What is Ohm's Law?
a) $I = V/R$ ✅
b) $V = IR^2$
c) $R = VI$

3. What is the unit of resistance?
a) Coulomb
b) Ohm ✅
c) Farad

4. What does a capacitor store?
a) Charge ✅
b) Current
c) Energy

5. What is the formula for electrical power?
a) $P = IV$ ✅
b) $P = IR^2$
c) $P = V^2/I$

6. If a circuit has a current of 2A and a resistance of 5Ω, what is the voltage?
a) 10V ✅
b) 7V
c) 5V

7. What is the frequency of AC mains supply in Europe?
a) 50 Hz ✅
b) 60 Hz
c) 70 Hz

8. What is the primary function of a diode?
a) Amplify current
b) Allow current to flow in one direction ✅
c) Store electrical energy

9. What is the purpose of a fuse in a circuit?
a) To store energy
b) To regulate voltage
c) To protect against overcurrent ✅

10. Which type of current flows in one direction only?
a) Alternating Current (AC)
b) Direct Current (DC) ✅
c) Pulsating Current

11. The SI unit of capacitance is:
a) Henry
b) Farad ✅
c) Coulomb

12. In a parallel circuit, the total resistance is:
a) The sum of individual resistances
b) Always equal to the smallest resistance
c) Less than the smallest resistance ✅

13. What is the function of a transformer?
a) To increase or decrease voltage ✅
b) To store charge
c) To convert AC to DC

14. Which device is used to measure current in a circuit?
a) Voltmeter
b) Ammeter ✅
c) Ohmmeter

15. What is the unit of electrical charge?
a) Coulomb ✅
b) Farad
c) Ampere

Read More

EASA Module M2: Physics Practice Questions

 1. What is the SI unit of force?

a) Newton (N) ✅
b) Joule (J)
c) Watt (W)

2. What is the acceleration due to gravity on Earth?
a) $8.9 \, \text{m/s}^2$
b) $9.8 \, \text{m/s}^2$ ✅
c) $10.2 \, \text{m/s}^2$

3. Which of the following is an example of scalar quantity?
a) Velocity
b) Force
c) Temperature ✅

4. What is the formula for kinetic energy?
a) $KE = \frac{1}{2} mv^2$ ✅
b) $KE = mv^2$
c) $KE = \frac{1}{2} mgh$

5. The unit of power in the SI system is:
a) Joule
b) Watt ✅
c) Newton

6. If an object is in free fall, what force acts on it?
a) Friction
b) Gravity ✅
c) Normal force

7. Which law states that "For every action, there is an equal and opposite reaction"?
a) Newton's First Law
b) Newton's Second Law
c) Newton's Third Law ✅

8. What does $F = ma$ represent?
a) Newton's First Law
b) Newton's Second Law ✅
c) Newton's Third Law

9. If a force of 10 N is applied to a mass of 5 kg, what is the acceleration?
a) $0.5 \, \text{m/s}^2$
b) $2 \, \text{m/s}^2$ ✅
c) $5 \, \text{m/s}^2$

10. What is the principle of conservation of energy?
a) Energy can be created and destroyed.
b) Energy cannot be created or destroyed, only transformed. ✅
c) Energy is always constant in motion.

Read More

EASA Module M1: Mathematics Practice Questions

 1. What is the value of 2 power 3?
a) 6
b) 8 ✅
c) 9

2. Simplify $5+3\times \mathrm{2?}$
a) 11 ✅
b) 16
c) 21
3. Solve for $x$: $2x+3=\mathrm{7?}$
a) 2 ✅
b) 3
c) 4

3. What is the square root of 81?
a) 7
b) 8
c) 9 ✅

4. Find the hypotenuse of a right triangle with legs of 3 and 4 units:
a) 5 ✅
b) 6
c) 7

5. If a wheel of radius R revolves 1/2 a turn, how many radians does it turn through?

a) 2π radians.

b) 2R2 radians.

c) π radians. ✅

6. An equilateral triangle has.

a) no equal sides.

b) 2 equal sides.

c) 3 equal sides. ✅

7. A circle contains.

a) 2πr radians.

b) 2π radians. ✅

c) 4π radians.

8.An input gear has 20 teeth, and the output gear has 120 teeth. If the input gear rotates 360°, the output gear will rotate?

a)  60°✅

b) 45°

c) 90°

9. A line from the center of a circle is called.

a) diameter.

b) its segment.

c) radius✅

10. Using cosine to find the angle of a triangle, which statement is true?

a) Opposite/Hyp.

b) Opposite/Adjacent.

c) Adjacent/Hyp.✅

Read More