Airframe, Systems & Powerplant | PPL(A) AGK - EASA & UK CAA
Air cooling systems
Section titled "Air cooling systems"The scenario when air cooled engines most likely to overheat is:
What engine design does provide the most efficient air cooling?
Airframe
Section titled "Airframe"What is the primary factor that determines the structural limitations of an airframe in a light aircraft?
The purpose of stringers, used in fuselage construction, is to:
The correct statement about a monocoque contruction is:
Major structural components are usually made of:
The correct statement about framework construction is:
Anti-icing systems
Section titled "Anti-icing systems"Electrical heating for pitot tubes and windshields are usually turned on:
Electric heating elements can be used as an anti-icing system for:
What type of anti-ice system is used on pitot tubes?
Batteries
Section titled "Batteries"Two identical batteries are connected parallel. The battery's voltage is 24 V and the capacity is 30 Ah. What will be the voltage and the capacity in the new circuit?
A battery can produce 4 Amperes for 15 hours. What is the capacity of the battery?
The capacity of a battery is 40 Ah. The battery can supply 5 Amperes for:
If two batteries (12 V; 25 Ah) are connected in series the voltage and the capacity will be:
Brakes
Section titled "Brakes"Select the correct statement:
Evaluate the following statements: 1. In drum brakes the drum is rotating with the wheel, and the brake shoes are stationary; 2. In disc brakes the disc is rotating with the wheel, and the brake pads are stationary.
Evaluate the following statements: 1. In drum brakes the drum and the brake shoes are rotating with the wheel; 2. In disc brakes the disc is rotating with the wheel, and the brake pads are stationary.
During deceleration, the wheel brakes convert:
Carburettors and fuel injectors
Section titled "Carburettors and fuel injectors"Fuel injection systems are __(1)__ prone to icing than carburettor systems, because __(2)__.
What is the most effective way to prevent carburettor icing?
In a degraded mode of carburettor operation, what could a rough-running engine indicate?
Which of the following is a sign of carburettor icing?
Which of the following is correct regarding carburettor icing?
What is the primary difference between fuel injection and carburettor systems in terms of fuel delivery?
What unit is responsible for mixing the air with fuel?
What could happen if the carburettor heat is used in normal conditions (without ice)?
On a flight where icing is expected, what is a common method of indicating that carburettor heat is applied?
What is the primary purpose of a carburettor in a piston engine?
The operating principle of a float-type carburettor primarily relies on which of the following?
Electrical components
Section titled "Electrical components"In case a circuit breaker trips:
What is the difference between fuses and circuit breakers?
Which of the following statements is correct or incorrect? 1. Trip-free circuit breaker can be reset while the fault still exists; 2. A non-trip-free circuit breaker can be reset while the fault still exists.
For what unit are fuses and circuit breakers rated?
Electrical distribution
Section titled "Electrical distribution"What is the main difference between AC (alternating current) and DC (direct current) in electrical systems?
What is the main characteristic of the Hot Bus in an aircraft's electrical system?
The devices in an electric system of an aircraft are connected:
What is the main function of a bus bar in an aircraft's electrical system?
The typical electrical current used in large aircraft is __(1)__, with a frequency of __(2)__.
In an aircraft, what does "common earth" refer to?
The electric system of small piston engine aircraft is:
Electrics - General and definitions
Section titled "Electrics - General and definitions"Resistance connected in series. What is the total resistance of the circuit?
What is the definition of electrical current?
If current flows through a wire:
Which of the following statements about capacitors is incorrect?
With what formula can the electric power be calculated?
What statement is correct regarding magnets?
In what unit is the electrical potential measured?
Two resistances (2 Ohm and 3 Ohm) are connected in parallel in a DC circuit. What is the total resistance of the circuit?
In a DC circuit, two resistors are connected in parallel. Select the correct statement:
What formula can be used to calculate the total resistance in a DC circuit where the resistances are connected in parallel?
The total capacitance of the capacitors connected parallel are the:
What is the correct form of Ohm's law?
A DC circuit: 1.33 Ohm resistance, the voltage is 4V and the current is 3A. What is the power consumed at the resistance?
In what unit can the capacitance of a capacitor?
In a simple DC circuit, the voltage is 6V and the resistance is 2 Ohm. What is the current?
Flight controls
Section titled "Flight controls"Which of the following are primary flight controls?
What is the primary difference between mechanical and powered flight controls in aircraft?
Which of the following are secondary flight controls?
What may be used to reduce the effect of adverse yaw?
How do the ailerons move when the yoke is turned left?
What fuel is coloured blue?
What statement is correct concerning fuel?
What is one key characteristic of alternate fuels compared to traditional AVGAS in piston engines?
The definition of specific fuel consumption is:
Which of the following is a common challenge when using automotive gasoline (MOGAS) in aircraft engines?
Engine compression ratio is limited due to:
Fuel system
Section titled "Fuel system"What is unusable fuel in an aircraft's fuel system?
What key feature allows fuel to flow to the engine in an aircraft with a gravity feed fuel system?
What could happen if air enters the fuel system due to a fuel line leak?
What is the primary purpose of the fuel tank vent system in an aircraft?
In the fuel system of a piston engine aircraft, what is the function of the drain valve?
What is vapor lock in an aircraft fuel system?
What is the primary function of the fuel pump in a piston engine fuel system?
On a low wing aircraft:
With regard to the fuel system, which parameters can be monitored by the pilot from the cockpit? 1. Fuel pressure 2. Fuel temperature 3. Fuel density 4. Total fuel mass 5. Fuel flow 6. Fuel type 7. Remaining endurance
An integral fuel tank:
Generation
Section titled "Generation"Evaluate the following statements: 1. The alternator produces alternating current. 2. The generator produces direct current.
When the alternator charges the battery the ammeter reads:
Hydraulics
Section titled "Hydraulics"Relationship between force, pressure and area is:
Characteristics of hydraulic fluids are:
Pascal's law states that in liquid, an applied force:
Which of the following statements about hydraulic fluid is correct?
How does a simple hydraulic system function to operate an aircraft's brakes?
Which of the following are essential components in a simple aircraft hydraulic system?
Hydraulic fluid commonly used in civil aviation aircraft is/are:
Which of the following components of a light airplane are usually actuated by the hydraulic system?
Ignition circuits
Section titled "Ignition circuits"In what scenario can rotating the propeller on the ground be dangerous?
When one of the magnetos are turned off:
Landing gear
Section titled "Landing gear"Where does the center of gravity lie on a tricycle layout?
What is correct concerning oleo-pneumatic shock absorbers?
Lubrication systems
Section titled "Lubrication systems"Which of the following statements is correct?
The pressure relief valve in the oil system will open:
With increasing temperature the viscosity of oil will be:
Oil pressure is measured:
Mixture
Section titled "Mixture"What is the chemically correct air/fuel mixture ratio in a piston engine?
For piston engines, the fuel/air ratio or mixture is the ratio between the:
Consider a carburetted piston-engine aircraft. What is the primary function of the mixture control lever?
In a piston engine if the ratio of air to fuel is approximately 9 : 1, the mixture is:
When excessively leaning the fuel mixture for improved fuel economy, but maintaining a mixture still richer than peak exhaust gas temperature (EGT), which engine parameter(s) are most likely to exceed their normal operating limits?
Which engine instrument is commonly used to monitor mixture adjustments?
Nose wheel steering operation and design
Section titled "Nose wheel steering operation and design"The nose wheel is prone to shimmy with a:
Nose wheel shimmy can be described as:
Nose wheel steering on light civil aircraft is usually achieved by:
The nose wheel steering is usually coupled with the:
Performance and engine handling
Section titled "Performance and engine handling"High manifold pressure at a low propeller RPM can result in:
When we increase the power setting in an aircraft fitted with constant speed propeller:
With increasing altitude in the standard atmosphere, the power of a naturally aspirated engine will:
After take-off during climbing, to compensate for the decreasing density:
Piston engines - General
Section titled "Piston engines - General"At what position of the cylinder does the ignition occur?
What is the correct order of cycles of a piston engine?
What valve is open during induction?
Which of the following statements is correct regarding the exhaust valve?
Which of the following statements is correct regarding the intake valve?
Theoretically the compression stroke is a(n):
What statement is correct regarding piston engines?
Approximately what is the thermal efficiency of a piston engine?
What dimension is a stroke defined as?
The compression ratio is:
The rotation speed of the camshaft is:
What parts are responsible for converting linear motion to rotary motion?
Which of the following statements is correct?
Evaluate the following statements: 1. The valves are opened by the camshaft rotation via the pushrod; 2. The valves are closed by the valve spring.
Evaluate the following statements: 1. The valves are opened by the valve springs. 2. The valves are closed by the camshaft and the pushrod.
Propellers
Section titled "Propellers"The propeller efficiency when the aircraft is stationary is:
The velocity of a propeller blade as path per time, from the root to the tip, is:
At what position of the propeller is the drag minimum?
During the take-off roll, the angle of attack of a fixed pitch propeller is:
What is the effect of propeller icing?
What usually limits the diameter of the propeller?
During level flight with constant TAS and fixed pitch propeller, if we increase the rpm, the angle of attack of the propeller will:
Static electricity
Section titled "Static electricity"What is one of the most common effects of a lightning strike on an aircraft's systems?
What should pilots do to minimize the risk of a lightning strike during flight?
What is static electricity?
How can static electricity affect aircraft during flight?
How does lightning usually affect the structure of an aircraft?
The reason for bonding on the aircraft is:
Static wicks are placed on the trailing edge of an aerofoil to:
Which method is used to reduce static electricity build-up on aircraft?
What happens when static electricity discharges?
System design, loads, stresses, maintenance
Section titled "System design, loads, stresses, maintenance"The definition of stress:
Where is the bending moment highest along the wing?
Fatigue can cause damage from the result of:
The definition of strain:
What is the correct formula?
What will happen to a structural member following a compression?
A column is prone to buckling when:
What kind of deformation is it, when the material returns to its original shape, after the force has been removed?
Tyres and wheels
Section titled "Tyres and wheels"What is the result of incorrect tyre pressure?
What phenomenon is called creep?
Small single engine piston aeroplanes usually have:
When can we take off with the creep marks misaligned?
During aquaplaning, the coefficient of dynamic friction is approximately:
Wings, tail surfaces and control surfaces
Section titled "Wings, tail surfaces and control surfaces"What kind of load is created on the surface of the wing as a result of lift during flight?
What structural member in the wing is responsible for withstanding bending loads?
What may happen when we exceed the limit load factor?
Which functions does the all-moving tailplane combine?
Lift and the weight of the wing creates:
An advantage of a biplane structure is?
Manuevering speed (VA) is:
A wing which has no struts and braces is defined as:
Wing ribs are responsible for:
During the steady climb and descent, the load factor:
Load factor is: