Aerospace Engineering Gate 2017 Questions with Answer

Ques 53 GATE 2017

A pilot was flying a single engine propeller aircraft and maintaining a steady level flight at a lift coefficient, C_L=0.5 at an altitude of 500 m. Due to some emergency, at the same altitude (500 m). the pilot had to fully deploy the landing gear. If the pilot wants to maintain steady level flight at the same C_L=0.5 and at the same altitude, which of the following control actions should the pilot undertake:

Ques 54 GATE 2017

A conventional low speed aircraft had the following aerodynamic characteristics:
C_DO=0.020, e=1.0 (Oswald efficiency). The aircraft was flown to maintain a steady level flight and for minimum thrust required, at a lift coefficient of C_L=0.8. The numerical value of the aspect ratio of the wing is _______ (in three decimal places).

Ques 55 GATE 2017

An aircraft is to be designed to ensure that it has enough excess power to achieve steady climb at flight path angle, γ=10 degrees, maintaining C_L/C_D=10.0. The numerical value of the thrust to weight ratio of the complete aircraft to meet the above requirement under standard atmospheric condition will be _______ (in three decimal place).

Ques 56 GATE 2017

An idealized velocity field is given by V→=4txî-2t²yĵ+4xz&kcirc;. At point (-1.1.0) and at t=1, the magnitude of the material acceleration vector of the fluid element is _______

Ques 57 GATE 2017

In the figure below, water exits from a nozzle into atmospheric pressure of 101 kPa. If the exit velocity is V₂=8m/s and friction is neglected, the magnitude of the axial force on the flange at location 1 required to keep the nozzle attached to the pipe is _______ N (round to nearest integer).

Ques 58 GATE 2017

A football, meant to be thrown at 100 km/h in sea level air (ρ=1.22 kg/m³, μ=1.78×10^-5N-s/m²). is to be tested using a one-quarter scale model in a water tunnel (ρ=1000 kg/m³, μ=10^-3N-s/m²). For dynamic similarity, the ratio of the model force to the prototype force is _______ (round to nearest integer).

Ques 59 GATE 2017

A rule states that in order to drink beer. one must be over 18 years old. In a bar, there are 4 people. P is 16 years old. Q is 25 years old. R is drinking milkshake and S is drinking a beer. What must be checked to ensure that the rule is being followed?

Ques 60 GATE 2017

Fatima starts from point P. goes North for 3 km, and then East for 4 km to reach point Q. She then turns to face point P and goes 15 km in that direction. She then goes North for 6 km. How far is she from point P. and in which direction should she go to reach point P?

Ques 61 GATE 2017

Each of P. Q. R. S. W. X. Y . Y and Z has been married at most once. X and Y are married and have two children P and Q. Z is the grandfather of the daughter S of P. Further. Z and W are married and are parents of R. Which one of the following must necessarily be FALSE?

Ques 62 GATE 2017

A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at 25 m intervals in this plot.

Ques 63 GATE 2017

500 students are taking one or more courses out of Chemistry. Physics, and Mathematics. Registration records indicate course enrolment as follows: Chemistry (329), Physics (186). Mathematics (295). Chemistry and Physics (83). Chemistry and Mathematics (217), and Physics and Mathematics (63). How many students are taking all 3 subjects?

Ques 64 GATE 2017

1200 men and 500 women can build a bridge in 2 weeks. 900 men and 250 women will take 3 weeks to build the same bridge. How many men will be needed to build the bridge in one week?

Ques 65 GATE 2017

The number of 3-digit numbers such that the digit 1 is never to the immediate right of 2 is