Solved Question Paper of Recruitment Test (Computer Based Recruitment Test) conducted by UPSC for the Post of Air Safety Officer in the Office of the Directorate General of Civil Aviation held on 11.08.2019.

61. Which of the following is NOT a primary flight control surface of an airplane?
(A) Aileron
(B) Fuselage
(C) Elevator
(D) Rudder

62. Deflection of the elevator creates a moment on the airplane about
(A) roll axis
(B) pitch axis
(C) yaw axis
(D) pitch and roll axis

63. Deflection of the rudder creates a moment on the airplane about
(A) pitch axis
(B) roll axis
(C) pitch and roll axis
(D) yaw axis

64. Which of the following devices is used to control the maximum pressure in the pneumatic
system and to off-load the compressor when the system is idle?
(A) Pressure Reducing Valve
(B) Pressure Regulator
(C) Pressure Intensifier
(D) Shut-off Valve

65. On landing, the spoiler is deflected to
(A) increase landing distance
(B) increase landing distance and to increase drag
(C) reduce landing distance and to increase drag
(D) reduce landing distance and to reduce drag

66. A flap is a segment of
(A) fuselage
(B) landing gear
(C) aerofoil
(D) cockpit

67.
Which one of the following relations is used to calculate magneto speed in magneto ignition
system (MIS) of an aircraft?

68. An electrical control system uses three positional sensing devices, each of which produces
1 output when the position is confirmed. These devices are to be used in conjunction with a
logic network of AND and OR gates and the output of the network is to be 1 when two or
more of the sensing devices are producing signals of 1. The network with suitable logic
function represented as
(A) F = (A+B) . (B+C) . (C+A)
(B) F = A.B + B.C + C.A
(C) F = A.B.C + A.B + B.C + C.A
(D) F = A + B + C

69. What minimum input voltage level is required to switch a BJT into saturation (on state),
when Vcc = 10 V, Rb = 16 kÎ©, Rc = 6.2 kÎ© and Î²dc = 20 in an n-p-n CE configuration BJT?
(Assume VBE = 0.7 V)
(A) 0.59 V
(B) 0.99 V
(C) 1.09 V
(D) 1.99 V