GATE ME format:mcq PYQs & Answers — Page 23

Questions 221–230 of 599. Imported answers require independent review unless marked reviewed.

Consider steady, one-dimensional compressible flow of a gas in a pipe of diameter 1 m. At one location in the pipe, the density and velocity are 1 kg/m

and 100 m/s, respectively. At a downstream location in the pipe, the velocity is 170 m/s. If the pressure drop between these two locations is 10 kPa, the force exerted by the gas on the pipe between these two locations is __________ N.

Your answerChoose one option.

300

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The steady velocity field in an inviscid fluid of density 1.5 is given to be

. Neglecting body forces, the pressure gradient at

is __________.

Your answerChoose one option.

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Consider a rod of uniform thermal conductivity whose one end (

) is insulated and the other end (

) is exposed to flow of air at temperature

with convective heat transfer coefficient

. The cylindrical surface of the rod is insulated so that the heat transfer is strictly along the axis of the rod. The rate of internal heat generation per unit volume inside the rod is given as

The steady state temperature at the mid-location of the rod is given as

. What will be the temperature at the same location, if the convective heat transfer coefficient increases to

Your answerChoose one option.

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In a vapour compression refrigeration cycle, the refrigerant enters the compressor in saturated vapour state at evaporator pressure, with specific enthalpy equal to 250 kJ/kg. The exit of the compressor is superheated at condenser pressure with specific enthalpy equal to 300 kJ/kg. At the condenser exit, the refrigerant is throttled to the evaporator pressure. The coefficient of performance (COP) of the cycle is 3. If the specific enthalpy of the saturated liquid at evaporator pressure is 50 kJ/kg, then the dryness fraction of the refrigerant at entry to evaporator is __________.

Your answerChoose one option.

0.2

0.25

0.3

0.35

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Consider the following sentences: (i) After his surgery, Raja hardly could walk. (ii) After his surgery, Raja could barely walk. (iii) After his surgery, Raja barely could walk. (iv) After his surgery, Raja could hardly walk. Which of the above sentences are grammatically CORRECT?

Your answerChoose one option.

(i) and (ii)

(i) and (iii)

(iii) and (iv)

(ii) and (iv)

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Five persons P, Q, R, S and T are to be seated in a row, all facing the same direction, but not necessarily in the same order. P and T cannot be seated at either end of the row. P should not be seated adjacent to S. R is to be seated at the second position from the left end of the row. The number of distinct seating arrangements possible is:

Your answerChoose one option.

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Ms. X came out of a building through its front door to find her shadow due to the morning sun falling to her right side with the building to her back. From this, it can be inferred that building is facing ________.

Your answerChoose one option.

North

East

West

South

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Consider the following sentences: (i) The number of candidates who appear for the GATE examination is staggering. (ii) A number of candidates from my class are appearing for the GATE examination. (iii) The number of candidates who appear for the GATE examination are staggering. (iv) A number of candidates from my class is appearing for the GATE examination. Which of the above sentences are grammatically CORRECT?

Your answerChoose one option.

(i) and (ii)

(i) and (iii)

(ii) and (iii)

(ii) and (iv)

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In the above figure, O is the center of the circle and, M and N lie on the circle.

The area of the right triangle MON is 50 cm

What is the area of the circle in cm

Diagram for Mechanical Engineering question 3

Your answerChoose one option.

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A digital watch X beeps every 30 seconds while watch Y beeps every 32 seconds. They beeped together at 10 AM.

The immediate next time that they will be together is ______

Your answerChoose one option.

10.08 AM

10.42 AM

11.00 AM

10.00 PM

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GATE ME format:mcq PYQs

Question 44

Question 44

Question 45

Question 45

Question 1

Question 1

Question 2

Question 2

Question 3

Question 3