ENGINEERING CAREER AND STUDY MATERIALS

Q.#1. The resistance of armature winding depends on (a) length of conductor (b) cross-sectional area of the conductor (c) number of conductors (d) all of the above Ans: (d) all of the above Q.#2. A commutator in a d.c. machine  (A) Converts the induced a.c armature voltage into direct voltage.  (B) Reduces power loss in field circuit.  (C) Reduces power loss in armature.  (D) Is not necessary. Ans:  (A) Converts the induced a.c armature voltage into direct voltage. Q.#3. In D.C. generators, the cause of rapid brush wear may be (a) severe sparking (b) any of the above (c) imperfect contact (d) rough commutator surface Ans: (b) any of the above Q.#4. The introduction of interpoles in between the main pole improves the performance of d.c. machines, because (A) A counter e.m.f. is induced in the coil undergoing commutation. (B) The flux waveform is improved with reduction in harmonics. (C) The inequality of air flux on the top and bottom halves of armatur

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

1. D.C. generator generally preferred for charging automobile batteries is (a) series generator (b) shunt generator (c) long shunt compound generator (d) any of'the above Ans: c 2. No-load current in a transformer (a) lags behind the voltage by about 75° (b) leads the voltage by about 75° (c) lags behind the voltage by about 15° (d) leads the voltage by about 15° Ans: a 3. Primary winding of a transformer (a) is always a low voltage winding (b) is always a high voltage winding (c) could either be a low voltage or high voltage winding (d) none of the above Ans: c 4. Power transformers are designed to have maximum efficiency at (a) nearly full load (b) 70% full load (c) 50% full load (d) no load Ans: a 5. In a transformer the tappings are generally provided on (a) primary side (b) secondary side (c) low voltage side (d) high voltage side Ans: c 6. Transmission voltage of llkV is normally used for distances upto (a) 20—25 km (b) 40—50 km (c)

Question No. 1. Electric resistance seam welding uses __________ electrodes.  (A) Pointed (B) Disc.  (C) Flat (D) Domed Ans: B Question No. 2. Spring constant in force-voltage analogy is analogous to (a) capacitance (b) reciprocal of capacitance (c) current (d) resistance Ans: b Question No. 3. The frequency and time domain are related through which of the following? (a) Laplace Transform and Fourier Integral (b) Laplace Transform (c) Fourier Integral (d) Either (b) or (c) Ans: a Question No. 4. When the initial conditions of a system are specified to be zero it implies that the system is (a) at rest without any energy stored in it (b) working normally with reference input (c) working normally with zero reference input (d) at rest but stores energy Ans: d Question No. 5. The power of a n-phase circuit can be measured by using a minimum of (a) (n - 1) wattmeter elements (b) n wattmeter elements (c) (n + 1) wattmeter elements (d) 2n wattmeter eleme

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

Question No. 1:-The 8-bit encoding format used to store data in a computer is  A:-ASCII  B:-EBCDIC  C:-ANCI  D:-USCII  Correct Answer:- Option-B Question No. 2:-The resistance of an ideal voltmeter is _________  A:-Zero  B:-Low  C:-High  D:-Infinite  Correct Answer:- Option-D Question No. 3:-The tenacity or hardness with which the bond holds the cutting point or abrasives in place of a grinding wheel is defined by the term ?  A:-Structure  B:-Grit size  C:-Grain size  D:-Grade  Correct Answer:- Option-D Question No. 4:-Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than  A:-5 mm  B:-10 mm  C:-20 mm  D:-30 mm  Correct Answer:- Option-D Question No. 5:-Which of the following fine dust removal equipment is the most efficient ?  A:-bag filter  B:-scrubber  C:-electrostatic precipitator  D:-cyclone separator  Correct Answer:- Option-C Question No. 6:-Bimetallic thermometers are used to measure the te

Junior Engineer (Electrical) - AIIMS Jodhpur Model Question Answer Electrical Engineers Recruitment Examination conducted by AIIMS Jodhppur, the previous question papers published in our websites and the model questions answers are listed below Q. No. 1. Various adjustments in an energy meter include (a) light load or friction (b) lag and creep (c) overload and voltage compensation (d) temperature compensation (e) all of the above Answer: (e) all of the above Q. No. 2. The line trap unit employed in carrier current relaying: (A) offers high impedance to 50 Hz power frequency signal (B) offers high impedance to carrier frequency signal (C) offers low impedance to carrier frequency signal (D) Both (A) & (C) Answer: (B) offers high impedance to carrier frequency signal Junior Engineer (Electrical) - AIIMS Jodhpur Model Question Answer   Q. No. 3.Most sensitive galvanometer is (a) elastic galvanometer (b) spot ballistic galvanometer (c) Duddlb galvanometer (d) vib