Organization : Union Public Service Commission
Exam : Engineering Services Exam
Subject : Mechanical Engineering Paper I
Document Type : Previous Question Papers
Location : India
Website : upsc.gov.in
Download Model/Sample Question Paper :
Objective Papers :
2011 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2011MECH_PAPER_I.pdf
2012 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2012MECH_OBJ_I.pdf
2013 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2013MECH%20ENGG%20PAPER%201.pdf
2014 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-OBJ-MECH-I.pdf
Conventional Papers :
2011 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2011MECH_PAPER_I_CONV.pdf
2012 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2012MECH_CONV_I.pdf
2013 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2013CONV%20MECH%20ENGG%20PAPER%201.pdf
2014 : https://www.pdfquestion.in/uploads/upsc.gov.in/7139-2014CONV-MECH-I.pdf
Mechanical Engineering Paper I :
Time Allowed : Two Hours
Marks : 100
Related : UPSC Engineering Services Exam Civil Paper I Question Paper : www.pdfquestion.in/7138.html
INSTRUCTIONS :
1. IMMEDIATELY AFTER THE COMMENCEMENT OF .THE EXAMINATION, YOU SHOULD CHECK THAT THIS-TEST BOOKLET DOES‘ NOT HAVE ANY UNPRINTED OR TORN OR MISSING PAGES 011- ITEMS, ETC. IF so, GET IT REPLACED BY A COMPLETE
2. ENCODE CLEARLY THE TEST BOOKLET SERIES A, B, C, OR D AS THE CASE. MAY I BE IN THE APPROPRIATE PLACE IN THE ANSWER SHEET.
3. You have’ to enter your Roll Number-on the Test Booklet in the Box provided alongside. DO NOT write anything else on the Test Booklet;
4. This Test Booklet contains ‘120 items (questions). Each item comprises four responses In (answers). You will select the response which you want to mark on the Answer Sheet. In ease you feel that there is more than one correct response, mark the= response which you consider the ‘best. In‘an’y case, choose ONLY ONE response for each item;
5. You have to mark all your responses ONLY on the separate Answer Sheet provided. See directions in the Answer Sheet.
6. All items carry equal marks.
7. BefOre you proceed to mark in the Answer Sheet’the response to various items in the Test Booklet, you have to ?ll in some particulars in the Answer Sheet as-per instructions sent to you .with your Admission Certi?cate.
8. After you have completed ?lling in all your responses on the Answer Sheet and the examination has concluded, you should hand over to “the Invigilator only the Answer Sheet. You are permitted to take away with you the Test Booklet.
9. Sheets for rough work are appended in the Test Booklet at the end.
10. Penalty for wrong answers
THERE WILL BE PENALTY ‘FOR WRONG ANSWERS MARKED BY A CANDIDATE IN THE OBJECTIVE TYPE QUESTION PAPERS.
(1) There are ‘four alternatives for the answer to every question. For each question’for which a wrong ansWer has been given by the candidate, one-third (0’33) of the marks assigned to that question i will be deducted as penalty.
(ii) If a candidate gives more than “one answer, -it will be treated as a wrong answer even if one of the given answers happens to be cOrrect and there will be same penalty as above to that question.
(iii) If a question is left blank, ile., no answer is given’by the candidate,- there will be no penalty for that question.
DO NOT OPEN THIS TEST BOOKLET UNTIL YOUARE ASKED TO DO so
1. Which one of the following represents open thermodynamic system ?
(a. Manual ice cream freezer
(b) Centrifugal- pump
(c) Pressure cooker
(d) Bomb calorimeter
2. A thermodynamic system is considered to be an isolated one if
(a) Mass transfer and entropy change arezero
(b) Entropy change and energy transfer are zero
(c) Energy transfer and mass transfer are zero
(d) Mass transfer and volume change are zero
A closed system is one in which
(a) Mass does not cross boundaries of the system, though energy may do so
(b) Mass crosses the boundary but not the energy
(c) Neither mass nor enerm cross the boundary of the system
(d) Both energy and mass cross the boundaries of the system
Work transfer between the system and the surroundings
(a) Is a point function
(b) is always given by lP dv
(c) Is a function of pressure only
(d) Depends on the path followed by the system
Air is being forced by the bicycle pump into a tyre against a pressure of 4-5 bars. A slow downward movement of the piston can be approximated as
(a) Isobaric process
(b) Adiabatic process
(c) Throttling process
((1) Isothermal process
Isentropic flow is
(a) Irreversible adiabatic
(b) Reversible adiabatic flow
(c) Ideal fluid flow
(d) Frictionless reversible ?ow
Increase in entropy of a system represents
(a) Increase in availability of energy
(b) Increase in temperature 15
(c) Decrease in pressure
(d) Degradation of energy
The boundary layer separation occurs when
(a) Pressure gradient is positive
(b) Pressure gradient is zero
(c) Pressure gradient is negative
(d) None of the above