Aerospace Engineering Gate 2010 Questions with Answer

Ques 27 GATE 2010


If is the potential function for an incompressible irrotational flow, and u and v are the Cartesian
velocity components, then which one of the following combinations is correct?

A

μ=∂φ∂x ν=∂φ∂x

B

u=-∂φ∂y ν=∂φ∂x

C

u=-∂φ∂y ν=∂φ∂y

D

u=∂φ∂x , ν=∂φ∂y


(d) is the correct answer.

Ques 28 GATE 2010


For a flow across an oblique shock which of the following statements is true?

A

Component of velocity normal to shock decreases while tangential component increases.

B

Component of velocity normal to shock increases while tangential component decreases.

C

Component of velocity normal to shock is unchanged while tangential component decreases.

D

Component of velocity normal to shock decreases while tangential component is unchanged.


(d) is the correct answer.

Ques 29 GATE 2010


Consider a 1-D adiabatic, inviscid, compressible flow of air (R=287 J/Kg-K cr=718 J/Kg-K)
through a duct of constant cross-sectional area A=1 m2. If the volumetric flow rate is
Q=680 m3/s and stagnation temperature is T0=580.05 K, then the air temperature inside the
duct is

A

300 K

B

350 K

C

400 K

D

450 K


(a) is the correct answer.

Ques 30 GATE 2010


Consider a potential flow over a spinning cylinder. The stream function is given as:
ψ = (V r sin θ) (1 − /) + (Γ/2π) ln(r/R)


The radial and azimuthal velocities on the cylinder surface at θ=π/2 are

A

Vr=0m/s Vo=-75 m/s

B

Vt=0 m/s. Vθ=75 m/s

C

Vr=0 m/s, Vo=-25 m/s

D

Vr=0 m/s, V6=25 m/s


(a) is the correct answer.

Ques 31 GATE 2010


Consider a potential flow over a spinning cylinder. The stream function is given as:
ψ = (V r sin θ) (1 − /) + (Γ/2π) ln(r/R)

The stagnation points are located at

A

210o and 330o

B

240o and 300o

C

30o and 150o

D

60o and 120o


(a) is the correct answer.

Ques 32 GATE 2010


Which of the following options is the closest in meaning to the word below:
Circuitous

A

cyclic

B

indirect

C

confusing

D

crooked


(b) is the correct answer.

Ques 33 GATE 2010


The question below consists of a pair of related words followed by four pairs of words. Select the
pair that best expresses the relation in the original pair.
Unemployed: Worker

A

fallow land

B

unaware: sleeper

C

wit: jester

D

renovated: house


(a) is the correct answer.

Ques 34 GATE 2010


Choose the most appropriate word front the options given below to complete the following
sentence:
If we manage to _______ our natural resources, we would leave a better planet for our children.

A

uphold

B

restrain

C

cherish

D

conserve


(d) is the correct answer.

Ques 35 GATE 2010


Choose the most appropriate word from the options given below to complete the following sentence:
His rather casual remarks on politics _______ his lack of seriousness about the subject.

A

masked

B

belied

C

betrayed

D

suppressed


(c) is the correct answer.

Ques 36 GATE 2010


25 persons are in a room. 15 of them play hockey. 17 of them play football and 10 of them play
both hockey and football. Then the number of persons playing neither hockey nor football is:

A

2

B

17

C

13

D

3


(d) is the correct answer.

Ques 37 GATE 2010


Modern warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare;and regretfully, there exist people in military establishments who think that chemical agents are useful tools for their cause.
Which of the following statements best sums up the meaning of the above passage:

A

Modern warfare has resulted in civil strife.

B

Chemical agents are useful in modern warfare.

C

Use of chemical agents in warfare would be undesirable.

D

People in military establishments like to use chemical agents in war.


(c) is the correct answer.

Ques 38 GATE 2010


If 137+276=435 how much is 731+672?

A

534

B

1403

C

1623

D

1513


(c) is the correct answer.

Ques 39 GATE 2010


5 skilled workers can build a wall in 20 days; 8 seini-skilled workers can build a wall in 25 days; 10 unskilled workers can build a wall in 30 days. If a team has 2 skilled, 6 semi-skilled and 5 unskilled workers, how long will it take to build the wall?

A

20 days

B

18 days

C

16 days

D

15 days


(d) is the correct answer.

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