ENGINEERING CAREER AND STUDY MATERIALS

MECHANICAL ENGINEERING MULTIPLE CHOICE QUESTIONS Multiple choice/ objective type questions for mechanical Engineering diploma/degree holders is published by http://engineering-questions.blogspot.com  1. In a blanking operation the clearance provided is a) on punch b) on die c) 50% on punch & 50% on die d) on die or punch depending upon the designer’s choice e) None of the above 2. Which of the following process s/ operation is carried out primarily to obtain surface finish? a) honing b) piercing c) Rolling d) hobbling e) None of the above Mechanical Engineering Solved Question Paper-100 Questions 3.If the shear force at a section of a beam under bending is equal to zero then the bending moment at the section is a) maximum b) Zero c) minimum d) minimum or maximum e) None of the above 4. The mechanism used in a shaping machine is  a) a closed 4-bar chain having 4 revolute pairs  b) a closed 6-bar chain having 6 revolute pairs  c...

MECHANICAL ENGINEER TEST QUESTIONS 1. Which of the following features are not present in a BOXN Wagon a) Air Brake b) CASNUB Bogie c) Covered wagon d) Cartridge Roller Bearing 2. Pick out the odd designation a) EDME b) CRSE c) CMPE d) CWE 3. The eigenvalues of a symmetric matrix are all (A) complex with non-zero positive imaginary part. (B) complex with non-zero negative imaginary part. (C) real. (D) pure imaginary. Mechanical Engineering Solved Question Paper-100 Questions 4 Two threaded bolts A and B of same material and length are subjected to identical tensile load. If the elastic strain energy stored in bolt A is 4 times that of bolt B and the mean diameter of bolt A is 12 mm, the mean diameter of bolt B in mm is (A) 16 (B) 24 (C) 36 (D) 48 5. The cost of a BOXN wagon is around a) Rs. 10 lakhs b) Rs. 15 lakhs c) Rs. 20 lakhs d) Rs. 25 lakhs 6 The pressure, dry bulb temperature and relative humidity of air in a room are 1 bar, 30°C and 70%, re...

MECHANICAL ENGINEERING EXAM QUESTIONS AND ANSWERS-2021 * The operating characteristic which inherently assists the establishment of equilibrium is called :  (a) floating controller action.  (b) proportional control action  (c) automatic regulation  (d) self regulation Answer:  (d) self regulation * The unit of force in S.I. units is  (a) kilogram  (b) Gram  (c) Newton  (d) joule. Answer:  (c) Newton * Break-even analysis shows profit when  (a) variable cost < fixed cost  (b) sales revenue > total cost  (c) sales revenue < total cost  (d) All the Above Answer:  (b) sales revenue > total cost  Mechanical Engineering Solved Question Paper-100 Questions- Click here Click here for Mechanical Engineering Latest Vacancies

MECHANICAL ENGINEERING QUESTIONS-2021 1.A ball bearing operating at a load F has 8000 hours of life. The life of the bearing, in hours, when the load is doubled to 2F is a) 8000 b) 6000 c) 4000 d) 1000 2. Environment friendly refrigerant R134 is used in the new generation domestic refrigerators. Its chemical formula is a) CHClF2  b) C2Cl3F3  c) C2Cl2F4  d) C2H2F4 3. The number of degrees of freedom of a planar linkage with 8 links and 9 simple revolute joints is  a) 1  b) 2  c) 3  d) 4 Mechanical Engineering Solved Question Paper-100 Questions- Click here 4.A solid circular shaft needs to be designed to transmit a torque of 50 Nm. Ifthe allowable shear stress of the material is 140 MPa, assuming a factor of safety of 2, the minimum allowable design diameter is mm is a) 8  b) 16 c) 24  d) 32 5. A carnot engine rejects 30 % of absorbed heat to a sink at 30 °C . The temperature of the heat  source is a)100° C ...

MECHANICAL ENGINEERING OBJECTIVE TYPE QUESTIONS 1. Teflon is used for bearings because of (a) Easily available (b) Better heat reducer (c) Low co-efficient of friction (d) Smaller space constraint Answer: (c) Low co-efficient of friction 2. A closed cycle gas turbine works on (a) Joule cycle (b) Rankine cycle (c) Carnot cycle (d) Atkinson carnot cycle Answer: (a) Joule cycle 3. Mohr’s circle can be used to determine following stress on inclined surface (a) Heat Stresses (b) Normal stresses (c) Maximum shear stresses (d) Principal stresses  Answer: (d) Principal stresses  4. In a cantilever beam, maximum deflection occurs at where a. Bending moment is maximum b. Bending moment is zero c. Bending is low d. Slope is zero Answer: b. Bending moment is zero 5. A solid cylinder of diameter 100 mm and height 50 mm is forged between two friction less flat dies to a height of 25 mm. The percentage change in diameter is (A) 41.4...

Mechanical Engineering Multiple Choice Questions Q1. The buckling load for a column pinned at both ends is 10 kN. If the ends are fixed, the buckling load changes to (1) 40 kN (2) 2·5 kN (3) 5 kN (4) 20 kN Q2. A 30 mm hole/shaft assembly results in minimum and maximum clearance of 0·03 mm and 0·3 mm respectively. The hole has a unilateral tolerance with zero fundamental deviation. If the tolerance of the shaft is 0·08 mm, the maximum size of the hole is (1) 30·11 mm (2) 30·16 mm (3) 30·19 mm (4) 30·27 mm Q3. Consider the following drives : A. V-belt B. Flat belt C. Toothed belt D. Round belt Which of the above is/are positive drive(s) ? Select the code for the correct answer from the options given below : (1) A and B only (2) B only (3) C only (4) C and D only Mechanical Engineering Solved Question Paper-100 Questions- Click here Q4. Bolts in the flanged end of a pressure vessel are usually pre-tensioned. Indicate which of the following statements is not...

MECHANICAL ENGINEERING EXAM QUESTIONS Question # 1. If the mechanical properties of a composite improves as a result of increasing the average fibre length, then it is called (1) Long fibre (2) Short fibre (3) Medium length fibre (4) Elastic fibre Question # 2. A refrigerator working on a reversed Carnot cycle removes 2 kW per minute of heat from a system working between the temperatures of 300 K and 200 K. The COP and power consumed by the cycle will be (1) 1, 1 kW (2) 1, 2 kW (3) 2, 1 kW (4) 2, 2 kW Question # 3. 18-4-1 HSS steel contains (1) 18% tin, 4% nickel, 1% chromium (2) 18% tungsten, 4% nickel, 2% chromium (3) 18% tungsten, 4% chromium, 1% vanadium (4) 18% nickel, 4% chromium, 1% manganese Question # 4. The dryness fraction of sample steam in separating calorimeter is 0·9 and in throttling calorimeter is 0·8. The dryness fraction of the sample is (1) 0·9 (2) 0·8 (3) 0·66 (4) 0·72 Mechanical Engineering Solved Question Paper-100 Questions- Clic...

1. Queuing theory deals with problems of a) material handling b) effective use of machines c) better utilization of man services d) reducing the waiting time or idle Jajme  Answer: (d) reducing the waiting time or idle Jajme  2. Monte Carlo solutions in queuing theory are extremely useful in queuing problems (a) that can't be analysed mathematically (b) involving multistage queuing (c) to verify mathematical results (d) all of the above Answer:   (a) that can't be analysed mathematically 3. For a product layout the material handling equipment must (a) be designed as special purpose for a particular application (b) employ conveyor belts, trucks, tractors etc.