26. A Bipolar Junction transistor is said to bo operating in saturation region if
27. Pinch - off voltage of a JFET is :
28. The best material for the gate region construction of a MOSFET is :
29. The common-emitter short circuit current gain p of a BJT :
30. For full-wave rectification, a four-diode bridge rectifier is claimed to have the following advantages over a two-diode circuit:(1) Less expensive transformer (2) Smaller size transformer and (3) Suitability for higher voltage application Of these
31. A 1 MHz sinusoidal carrier wave is amplitude modulated by a sine wave of period 100 μs. Which of the following frequencies will not be present in the modulated output signal?(A) 990 KHz (B) 1000 KHz(C ) 1010 KHz (D) 1020 KHz
32. Two non-inverting amplifiers one having a unity gain and the other having a gain of 10, are made using identical operational As compared to the unity amplifier,the amplifier circuit with gain
33. The image frequency of the AM super heterodyne i receiver when it is tuned to receive a radiostation operating at 628 KHz is :
34. A 741 type op-amp has a gain bandwidth product of 1 1 MHz. A non-inverting amplifier usingthis op-amp and having a voltage gain of 20 dB will exhibit a -3dB bandwidth of:
35. How many number of NOR gates are required to realise an AND function?
36. Simplified form of the logic expression : (X + Y + Z)(X + Y¯ + Z) (X +¯Y-¯Z)
37. The C - band is :
38. If D is the distance between two co-channel cells and R is the cell radius, then is known
39. The cell using different carrier frequencies in a cluster is :
40. Which of the following is the correct statement in connection with satellite communication?
41. Two forces of equal magnitude P' act at an angle '0' to each other. Their resultant will be :
42. The unit of energy in SI system of units is :
43. The moment of inertia of a thin disc of mass 'm' and radius ‘r', about an axis passing through its centre of gravity and perpendicular to the plane of the disc is :
44. The ratio of limiting friction to the normal reaction between the two bodies is defined as :
45. The loss of kinetic energy during the impact of collision of two inelastic bodies (mass m2, velocities = U1 ,U2) is given by :
46. The maximum deflection at the centre of a simply supported beam 'I' with a uniformly distributed load w/unit length is given by
47. If the momentum of a given body is doubled, its kinetic energy will:
48. For a given velocity of projectile, the horizontal range will be maximum when angle of projection with the horizontal is :
49. For a compound pendulum with distance 'h' from the point of suspension ‘O’ and a radius of gyration ‘kc' about an axis through the centre of gravity and perpendicular to the plane of motion, the periodic time (tp) is given by :
50. The force acting on a body when rotates along the radius of a circular path and is always directed towards the centre of the path :
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