TECH GEN 04 Regular 2023 Exam Paper PDF

TECH GEN 04 regular 2023 Q.1) If the airspeed of an aircraft increases from 75 knots to 150 knots the angle of attack is held constant, the parasite drag will? A) Remain the same. B) Be four times greater. C) Double. Ans: B Q.2) You have adjusted the elevator trim tab to c...

TECH GEN 04 regular 2023 Q.1) If the airspeed of an aircraft increases from 75 knots to 150 knots the angle of attack is held constant, the parasite drag will? A) Remain the same. B) Be four times greater. C) Double. Ans: B Q.2) You have adjusted the elevator trim tab to correct for nose heavy, what was the direction of travel of the trim tab: A) The elevator trim has moved up and elevator up. B) The elevator trim tab has moved up and elevator moved down. C) The elevator trim tab has moved down and elevator down. Ans B Q.3) The induced drag of an aircraft: A) Induced drag inversely proportional to squared IAS. B) Induced drag inversely proportional to aspect ratio. C) both are correct. Ans C Q.4 An aircraft is constructed with dihedral to provide: A) Longitudinal stability about the lateral axis. B) Lateral stability about the longitudinal axis. C) Lateral stability about the normal axis. Ans B Q.5 Swept back and Delta wings are: A) Very efficient at high supped but corresponding inefficient at low speeds B) Fairly inefficient at high speed but very efficient at low speed C) Neither efficient at low or high speed Ans A Q.6 The function of Shut off valve in a pneumatic system is to: A) Shut Off the pneumatic system B) To switch off bleed air supply from an engine and the APU C) To regulate the supply of bleed air Ans B Q.7 Electrons has a: A) Positive charge B) Negative charge C) Positive & Negative Ans B Q.8 The purpose of the diffuser vanes in a centrifugal compressor is to: A) Increase the charge temperature B) Convert Kinetic energy into pressure Energy C) Convert pressure energy into kinetic energy Ans B Q.9 A typical APU can provide A) Air for engine starting B) Electrical power for ground or inflight use C) All of the above Ans C Q.10 What is the purpose of a hydraulic check valve? A) To direct the fluid in various directions B) To restricts the fluid flow in one direction C) To obtain fluid flow in one direction Ans C Q.11 The power increase that occurs with initial increase in altitude when an engine has supercharger fitted is due to: A) The increasing charge temperature B) The reducing exhausts back pressure C) The decreasing density of the atmosphere Ans B Q.12 Because of the reduction in density of the atmosphere, with an increase in altitude: A) The octane rating of the fuel must be increases B) The throttle must be reduced to maintain the best Air/Fuel ratio C) The mixture control must be moved towards the weak position Ans C Q.13 Dynamic stability is ------- at high altitude due to------aerodynamic damping A) Increased Reduced B) Reduced Reduced C) Reduced Increased Ans B Q,14 Materials which have free electrons are called: A) Insulators B) Resistance C) Conductors Ans C Q.15 Materials which have few free electrons are called: A) Insulators B) Resistance C) Conductors Ans A Q.16 Materials which have very few free electrons are called: A) Insulators B) Resistance C) Conductors Ans A Q.17 Choose the correct statement: A) Decreasing the camber of an aerofoil will increase its lift B) Increasing the camber of an aerofoil will increase its lift C) Increasing the camber of an aerofoil will decrease its lift Ans B Q.18 Mark the correct statement: A) Power effect most prominent when aircraft has high power low speed during take off and while approaching B) Instability depends on distance from CG to propeller and is lowest at high power and low dynamic pressure C) Combined direct & indirect power effects increase of static stability at high power and high lift Ans A Q.19 When connecting battery in parallel the total voltage: A) Sum of the battery B) Equal to the individual battery voltage C) The sum of their individual voltage Ans B Q.20 Dry Chemical (Dry powder): A) Stored in purple, brown, or green containers and is very effective against electrical and flammable fires B) The use of this agent in crew compartment or passenger cabins of pressurized aircraft is not permit is best known for its applicable against wheel and brake fire C) It is principal extinguisher for use on flammable liquid fires. It blankets the flame by excluding oxygen Ans B Q.21 Choose the correct statement, Taper ratio is: A) Ratio of average chord to root chord B) Ratio of root chord to tip chord C) Ratio of tip chord to root chord Ans C Q.22 Electro Motive Force(EMF) is a force behind the current to make it flow. If the EMF: A) Decrease, the flow of electrons increases B) Increase, the flow of electrons decreases C) Decreases, the flow of electrons decreases Ans C Q.23 Fire detection system generally use four methods detection : A) FWD cargo, AFT cargo, APU and engines deflection system B) AFT cargo fire bottles APU fire bottles engine fire bottle & FWD cargo fire bottle C) Melting link detectors, Differential expansion detectors, Gas filed detectors and continuous fire detection Ans C Q.24 What is the purpose of a hydraulic sequence valve? A) To activate the shuttle valve B) To sequence certain events only after completing previous one C) For re sequencing in short of power Ans B Q.25 When air is pressurised by an engine driven compressors , it is also : A) Cooled B) Heated C) Moisturized Ans B Q.26 ”MACH TUCK” or “TUCK UNDER” are associated with: A) Flying at low speed and high gross weight B) Flying at supersonic speeds C) Flying at high subsonic speeds Ans B Q.27 EMF is measured in : A) Units of Voltage B) Units of Amp C) Units of watt Ans A Q,28 An aircraft in level flight and cabin altitude increases pressure differential will : A) Remain the same B) Increase C) Decrease Ans C Q.29 How is the ice prevented from forming on the front wind shield of large system: A) Warm air is blown over the wind shield B) De-icing fluids are sprayed C) Electrically heated wind shields Ans C Q.30 When gases passes through convergent duct: A) Velocity and temperature Increase and pressure decreases B) Velocity increases and temperature and pressure decreases C) Velocity decreases and temperature and pressure increases Ans B Q.31 Current is : A) A magnetic field produce around the conductor B) Potential difference across the conductor C) The number of electrons passing any point in the conductor in one second Ans C Q.32 A cannular combustion system A. A set of flame tube each of which is mounted in a separate air casing B. A set of flame tubes enclosed in a common air casing C. One common flame tube enclosed in a common air casing Ans B Q.33 Class D compartment (which can not be reached by a crew inflight) A. Cabin crew operated fire extinguisher B. Must not be ventilated to contain the fire C. The compartment shall be lined with fire resistant material and ventilation and droughts must be there so that any fire likely to occur will not progress beyond safe limits. Ans C Q. 34 Major advantage of Semi Monocoque structure over a monocoque structure is: A. Better strength to weight ratio B. Cheaper to manufacture C. It is lighter Ans A Q.35 Choose the correct statement A. High lift devices are fitted on leading edge only B. High lift devices are fitted on trailing edge only C. Can be fitted on the leading and trailing edges Ans C Q.36 Lox is: A. Lean Oxygen B. Low pressure oxygen pressure C. Liquid oxygen Ans C Q.37 Which statement is correct: A. Flight spoilers rise on the wing with the “up-going” aileron B. Flight spoilers remain retracted on the wing with “up-going” aileron C. Flight spoiler remain retracted irrespective of the “up-going” or “down-going” ailerons Ans A Q.38 What is inertia? A. Opposition which a body offers to change in motion. B A large mass ha no inertia C Inertia refers to only stationary masses Ans A Q.39 To improve aerodynamic performance, modern aeroplane make use of upper surfaces that affect the airflow over the surface that could be: A Flaps B Spoilers and speed brakes C All of the above Q.40 Upto which pressure altitude do most cabin pressure system operates to provide sufficient oxygen supply to the passenger? A 35000ft B 10000 ft C 8000 ft Ans C Q.41 A supercharger is capable of maintaining sea level values of power upto a high altitude is called: A Ground boosted supercharger B Externally driven supercharger C Altitude boosted supercharger Ans C Q.42 APU are self monitoring and will shut down in the event of : A Fire and oil pressure B Fire, Oil pressure failure, Overspeed and Overheat C Fire and overheat only Ans B Q.43 Gas turbines use OIL for lubrication: A mineral oil straight. B multi-grade 20/50. C synthetic oil. Ans C Q.44 Hydraulic accumulator A Dampen pressure fluctuations B Back up due to pressure pump failure C Both a and b Ans C Q.45 The power output of a piston engine can be calculated by multiplying: A force by distance B work by velocity C Torque by RPM Ans C Q.46 Wing underside stress in level flight, no turbulence A Tension B Shear C Compression Ans A Q.47 Which of the following ice removal methods does the modern jet transport normally utilize? A Electric thermal blanket. B Pneumatic boots C Hot air Q.48 Voltage is Constant in A Battery B Cell C Generators Ans A Q.49 Bulkhead in a wing structure are for; A To provide the strength B Separating pressurized with Unpressurized area C Both A and B Ans C Q.50 Engines which have a particular problem with inherent compressor stall at low RPM during engine acceleration or deceleration are fitted with: A Variable stator vanes B Variable inlet guide vanes C Multi Spool Bleeds Ans B Q.51 Electrolytes are: A Not corrosive B corrosive but do not cause damage C Highly corrosive and if spilled can cause extensive damage Ans C Q.52 A non-return valve: A can only be fitted if provided with a by-pass selector B closes if inlet pressure exceeds outlet pressure C closes if inlet pressure reduces. Ans C Q.53 Jet pipe is insulated from the airframe by: A Heat insulation B Cooling air jacket C Both A and B. Ans C Q.54 A separator in an accumulator; A isolates the gas from the fluid B reduces the size of the accumulator required C Maintains the fluid level in the reservoir Ans A Q.55 What does Vc stand for? A Cruising speed B Dive speed C Gust tolerance speed Ans A Q. 56 In which direction does an anti-balance tab move concerning primary control surfaces? Ans same direction Q.57 What circuit protectors are used in aircraft electrical circuits? A Fuse B Circuit breaker C All of the above Ans C Q.58 Type of circuit breaker?? A Trip free B Trip free and non trip free C Non trip free Ans B Q.59 Mach angle A Mach angle increases as mach no. increases B Mach angle decreases as mach no. increases C Mach angle is directly proportional to mach no. Ans B Q.60 Vne speed? A Max speed can be flown B Stall speed C Speed exceed in Normal conditions Ans A Q.61) Factors affecting Vmcg : A) Altitude and temperature, Rudder Arm, nose wheel steering B) Altitude and temperature, Rudder Arm, CP C) Altitude and temperature, Aileron, CG, CP Ans: A Q.62) Speed in which landing gear extended as well as retracted possible: A) Vlo B) Vle C) Vlo (ret) Ans: A Q.63) Fluttering is due to A) Mass balance B) unbalance C) overbalance Q.64) What is Tailerons: A) combine the effects of elevator and aileron. B) (‘V’ or butterfly tail) combines the effects of rudder and elevator. C) slab horizontal tail surfaces that move either together, as pitch control, or independently for control in roll. Ans: C Q.65) Propeller turning clockwise, due to spiral slip stream effect the force hit the aircraft tail from _____ and Fin force to the _____? A) Left, left B) Left, right C) Right, Right Ans: B Q.66) When the angle of attack of a cambered aerofoil is increased the CP moves: A) forward on chord line B) moves aft on chord line C) remain at neutral Ans: A Q.67) Dutch roll is about oscillation in : A) Pitching and rolling. B) Rolling and pitching. C) Rolling and yawing. Ans C Q.68) Mean camber line: A) Line drawn between upper surface and lower surface of aerofoil. B) Line drawn between trailing edge and leading edge. C) Both A and B are correct. Ans: A