Boolean algebra is essentially based on
|
(a) Truth |
(b) Logic |
(c) Symbol |
(d) Numbers |
Boolean algebra is essentially based on
|
(a) Truth |
(b) Logic |
(c) Symbol |
(d) Numbers |
(b) Logic
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If the focal length of objective and eye lens are 1.2 cm and 3 cm respectively and the object is put 1.25 cm away from the objective lens and the final image is formed at infinity. The magnifying power of the microscope is
|
(a) 150 |
(b) 200 |
(c) 250 |
(d) 400 |
The electric field inside a spherical shell of uniform surface charge density is
|
(a) Zero |
|
(b) Constant, less than zero |
|
(c) Directly proportional to the distance from the centre |
|
(d) None of the above |
An amplitude modulated wave is modulated to 50%. What is the saving in power if carrier as well as one of the side bands are suppressed
|
(a) 70% |
(b) 65.4% |
(c) 94.4% |
(d) 25.5% |
The use of study of hysteresis curve for a given material is to estimate the
|
(a) Voltage loss |
(b) Hysteresis loss |
(c) Current loss |
(d) All of these |
A circular coil of radius 4 cm and of 20 turns carries a current of 3 amperes. It is placed in a magnetic field of intensity of 0.5 . The magnetic dipole moment of the coil is
|
(a) 0.15 |
(b) 0.3 |
(c) 0.45 |
(d) 0.6 |
A conducting rod of length 2l is rotating with constant angular speed w about its perpendicular bisector. A uniform magnetic field
exists parallel to the axis of rotation. The e.m.f. induced between two ends of the rod is

|
(a) Bω |
(b) |
(c) |
(d) Zero |