Mechanical Engineering Gate Yearwise
Mechanical Engineering Gate 2015 Set-1 Questions with Answer
Ques 14 GATE 2015 SET-1
Water (ρ = 1000 kg/m³) flows through a venturimeter with inlet diameter 80 mm and throat diameter 40 mm. The inlet and throat gauge pressures are measured to be 400 kPa and 130 kPa respectively. Assuming the venturimeter to be horizontal and neglecting friction, the inlet velocity (in m/s) is ________
Ques 15 GATE 2015 SET-1
Consider fully developed flow in a circular pipe with negligible entrance length effects. Assuming the mass flow rate, density and friction factor to be constant, if the length of the pipe is doubled and the diameter is halved, the head loss due to friction will increase by a factor of
Ques 16 GATE 2015 SET-1
The Blasius equation related to boundary layer theory is a
Ques 17 GATE 2015 SET-1
Match the following pairs:
| Equation | Physical Interpretation |
| P. ∇ x V = 0 | I. Incompressible continuity equation |
| Q. ∇ . V = 0 | II. Steady flow |
| R. DV/Dt = 0 | III. Irrotational flow |
| S. ∂V/∂t = 0 | IV. Zero acceleration of fluid particle |
Ques 18 GATE 2015 SET-1
The velocity field of an incompressible flow is given by V = (a1x + a2y + a3z)i + (b1x + b2y + b3z)j + (c1x + c2y + c3z)k, where a1=2 and c3=-4. The value of b2 is ________.
Ques 19 GATE 2015 SET-1
Choose the appropriate word/phrase, out of the four options given below, to complete the following sentence:
Dhoni, as well as the other team members of Indian team, ________ present on the occasion.
Ques 20 GATE 2015 SET-1
Choose the word most similar in meaning to the given word:
Awkward
Ques 21 GATE 2015 SET-1
What is the adverb for the given word below?
Misogynous
Ques 22 GATE 2015 SET-1
An electric bus has onboard instruments that report the total electricity consumed since the start of the trip as well as the total distance covered. During a single day of operation, the bus travels on stretches M, N, O, and P, in that order. The cumulative distances travelled and the corresponding electricity consumption are shown in the Table below:
| Stretch | Cumulative distance (km) | Electricity used (kWh) |
| M | 20 | 12 |
| N | 45 | 25 |
| O | 75 | 45 |
| P | 100 | 57 |
The stretch where the electricity consumption per km is minimum is
Ques 23 GATE 2015 SET-1
Ram and Ramesh appeared in an interview for two vacancies in the same department. The probability of Ram's selection is 1/6 and that of Ramesh is 1/8. What is the probability that only one of them will be selected?
Ques 24 GATE 2015 SET-1
In the following sentence certain parts are underlined and marked P, Q, and R. One of the parts may contain certain error or may not be acceptable in standard written communication. Select the part containing an error. Choose D as your answer if there is no error.
The student corrected all the errorsP that the instructor markedQ on the answer bookR.
Ques 25 GATE 2015 SET-1
Given below are two statements followed by two conclusions. Assuming these statements to be true, decide which one logically follows.
Statements:
I. All film stars are playback singers.
II. All film directors are film stars.
Conclusions:
I. All film directors are playback singers.
II. Some film stars are film directors.
Ques 26 GATE 2015 SET-1
A tiger is 50 leaps of its own behind a deer. The tiger takes 5 leaps per minute to the deer's 4. If the tiger and the deer cover 8 metre and 5 metre per leap respectively, what distance in metres will the tiger have to run before it catches the deer?
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