Indicate which one of the following system is digital
|
(a) Pulse position modulation |
(b) Pulse code modulation |
|
(c) Pulse width modulation |
(d) Pulse amplitude modulation |
(b) Pulse code modulation
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Three infinitely long charge sheets are placed as shown in figure. The electric field at point P is
|
(a) |
(b) |
(c) |
(d) |
The galaxies are moving away from each other. It is explained by
|
(a) White dwarf star |
(b) Red shift |
(c) Neutron star |
(d) None of these |
A toroid has number of turns per unit length n, current i, then the magnetic field is
|
(a) |
(b) |
(c) |
(d) None of these |
In a nuclear reactor, the fuel is consumed at the rate of 1 mg/s. The power generated in kilowatt is
(a) 9 
|
(b) 9 
|
(c) 9
|
(d) 9 
|
The network shown in the figure is a part of a complete circuit. If at a certain instant the current i is 5 A and is decreasing at the rate of 
then 
is
|
(a) 5 V |
(b) 10 V |
(c) 15 V |
(d) 20 V |
Effective capacitance between A and B in the figure shown is (all capacitance are in mF)
|
(a) 21 mF |
(b) 23 mF |
(c) |
(d) |
