Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
(c) Rectifier
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The ripple factor in a half wave rectifier is
|
(a) 1.21 |
(b) 0.48 |
(c) 0.6 |
(d) None of these |
Lenz's law gives
|
(a) The magnitude of the induced e.m.f. |
|
(b) The direction of the induced current |
|
(c) Both the magnitude and direction of the induced current |
|
(d) The magnitude of the induced current |
If a torch is used in place of monochromatic light in Young’s experiment what will happens
|
(a) Fringe will appear for a moment then it will disappear |
|
(b) Fringes will occur as from monochromatic light |
|
(c) Only bright fringes will appear |
|
(d) No fringes will appear |
Two batteries A and B each of e.m.f. 2 V are connected in series to an external resistance R = 1 ohm. If the internal resistance of battery A is 1.9 ohms and that of B is 0.9 ohm, what is the potential difference between the terminals of battery A
|
(a) 2 V |
(b) 3.8 V |
(c) Zero |
(d) None of the above |
The electromagnetic waves travel with a velocity
|
(a) Equal to velocity of sound |
(b) Equal to velocity of light |
|
(c) Less than velocity of light |
(d) None of these |