01. NMOS devices are formed in A. p-type substrate of high doping level B. n-type substrate of low doping level C. p-type substrate of moderate doping level D. n-type substrate of high doping level Answer Option : C 02. Source and drain in nMOS device are isolated by A. a single diode B. two diodes […]
11. The condition for linear region is A. Vgs lesser than Vt B. Vgs greater than Vt C. Vds lesser than Vgs D. Vds greater than Vgs Answer Option : B 12. As source drain voltage increases, channel depth A. increases B. decreases C. logarithmically increases D. exponentially increses Answer Option : B 13. Speed
21. Enhancement mode device acts as switch, depletion mode acts as _____ switch A. open, closed B. closed, open C. open, open D. close, close Answer Option : A 22. Depletion mode MOSFETs are more commonly used as A. switches B. resistors C. buffers D. capacitors Answer Option : B 23. Enhancement mode MOSFETs are
31. _______ is used to deal with effect of variation A. chip level technique B. logic level technique C. switch level technique D. system level technique Answer Option : D 32. As die size shrinks, the complexity of making the photomasks A. increases B. decreases C. remains the same D. cannot be determined Answer Option
41. In nMOS device, gate material could be A. silicon B. polysilicon C. boron D. phosporus Answer Option : B 42. The commonly used bulk substrate in nMOS fabrication is A. silicon crystal B. silicon-on-sapphire C. phosporus D. silicon-di-oxide Answer Option : C 43. In nMOS fabrication, etching is done using A. plasma B. hydrochloric
51. CMOS technology is used in developing A. microprocessors B. microcontrollers C. digital logic circuits D. all of the mentioned Answer Option : D 52. CMOS has A. high noise margin B. high packing density C. high power dissipation D. high complexity Answer Option : B 53. In CMOS fabrication, nMOS and pMOS are integrated
61. N-well is formed by A. decomposition B. diffusion C. dispersion D. filtering Answer Option : B 62. ______ is sputtered on the whole wafer A. silicon B. calcium C. potassium D. aluminium Answer Option : D 63. MOS technology has more load driving capability. A. true B. false Answer Option : B 64. What
71. Advantages of E-beam masks are A. small feature size B. larger feature size C. looser layer D. complex design Answer Option : D 72. Which process is used in E-beam machines? A. raster scanning B. vector scanning C. both of the mentioned D. none of the mentioned Answer Option : C 73. What is
81. The dopants are introduced in the active areas of silicon by: a) Diffusion process b A. Diffusion process B. Ion Implantaion process C. Chemical Vapour Deposition D. Either Diffusion or Ion Implantaion Process Answer Option : D 82. To grow the polysilicon gate layer, the chemical used for chemical vapour deposition is: a A.
91. In resistive region A. Vds greater than (Vgs – Vt) B. Vds lesser than (Vgs – Vt) C. Vgs greater than (Vds – Vt) D. Vgs lesser than (Vds – Vt) Answer Option : B 92. Threshold voltage is negative for A. nMOS depletion B. nMOS enhancement C. pMOS depletion D. pMOS enhancement Answer
What is theory of machine? Theory of Machines may be defined as that branch of engineering science which deals with the study of relative motion between various elements of a machine and the forces which act on them. A machine is any physical system with ordered structural and functional properties. It may represent human-made or
01. Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts A. theory of machines B. applied mechanics C. mechanisms D. kinetics Answer Option : D 02. Which of the following disciplines provides study of relative motion between the parts of
31. Oldham’s coupling is the A. second inversion of double slider crank chain B. third inversion of double slider crank chain C. second inversion of single slider crank chain D. third inversion of slider crank chain Answer Option : B 32. Sense of tangential acceleration of a link A. is same as that of velocity
11. The purpose of a link is to A. transmit motion B. guide other links C. act as a support D. all of the above Answer Option : D 12. A universal joint is an example of A. higher pair B. lower pair C. rolling pair D. sliding pair Answer Option : B 13. Rectilinear
21. Kinematic pairs are those which have two elements that A. have line contact B. have surface contact C. permit relative motion D. are held together Answer Option : C 22. The lower pair is a A. open pair B. closed pair C. sliding pair D. point contact pair Answer Option : B 23. Automobile
41. In problem 47, the chain is unconstrained when A. L.H.S. = R.H.S. B. L.H.S. > R.H.S. C. L.H.S. < R.H.S D. there is no such criterion for checking above requirement Answer Option : C 42. The tendency of a body to resist change from rest or motion is known as A. mass B. friction
51. In automobiles the power is transmitted from gear box to differential through A. bevel gear B. universal joint C. Hooke’s joint D. Knuckle joint Answer Option : D 52. The indicator using Watt mechanism is known as A. Thompson indicator B. Richard indicator C. Simplex indicator D. Thomson indicator Answer Option : B 53.
61. The locus of a point on a thread unwound from a cylinder will be A. a straight line B. a circle C. involute D. cycloidal Answer Option : C 62. To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use A. spur gear B. spiral gear C.
71. An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has A. 2 links B. 3 links C. 4 links D. 5 links Answer Option : C 72. Whitworth quick return mechanism is obtained by
81. In above example, the minimum length of the coupler will be A. 45 mm B. slightly less than 45 mm C. slightly more than 45 mm D. 95 mm Answer Option : C 82. In S.H.M., acceleration is proportional to A. velocity B. displacement C. rate of change of velocity D. all of the
91. According to Kennedy’s theorem, if three bodies have plane motions, their instantaneous centers lie on A. a triangle B. a point C. two lines D. a straight line Answer Option : D 92. In a rigid link OA, velocity of A w.r.t. will be A. parallel to OA B. perpendicular to OA C. at
What is Strength Of Materials? In the mechanics of materials, the strength of a material is its ability to withstand an applied load without failure or plastic deformation. The field of strength of materials deals with forces and deformations that result from their acting on a material. In the mechanics of materials, the strength of
01. Slenderness ratio is the ratio of effective length of column and A. lateral dimension of a column B. least radius of gyration of a column C. maximum radius of gyration of a column D. none of the option Answer Option : B 02. A continuous beam is one which has A. less than two
11. As compared to uniaxial tension or compression, the strain energy stored in bending is only A. 1/8 B. 1/4 C. 1/3 D. 1/2 Answer Option : C 12. The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is A. 1/4 B.
21. The minimum number of rivets for the connection of a gusset plate, is A. 1 B. 2 C. 3 D. 4 Answer Option : B 22. The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is A. 200 B. 240 C. 360 D. 416
