Basically, the product modulator is
|
(a) An amplifier |
(b) A mixer |
|
(c) A frequency separator |
(d) A phase separator |
Basically, the product modulator is
|
(a) An amplifier |
(b) A mixer |
|
(c) A frequency separator |
(d) A phase separator |
(b) A mixer
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Which of the following is constructed on the principle of electromagnetic induction
|
(a) Galvanometer |
(b) Electric motor |
(c) Generator |
(d) Voltmeter |
Four wires each of length 2.0 metres are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct
|
(a) Couple on loop P will be the highest |
(b) Couple on loop Q will be the highest |
|
(c) Couple on loop R will be the highest |
(d) Couple on loop S will be the highest |
A heavenly body is receding from earth such that the fractional change in l is 1, then its velocity is
|
(a) C |
(b) |
(c) |
(d) |
Constantan wire is used in making standard resistances because its
|
(a) Specific resistance is low |
|
(b) Density is high |
|
(c) Temperature coefficient of resistance is negligible |
|
(d) Melting point is high |
When a battery is connected across a series combination of self inductance L and resistance R, the variation in the current i with time t is best represented by
|
(a)
|
(b)
|
(c)
|
(d) |
The earth’s magnetic field at a given point is 0.5 . This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius 5.0cm. The current required to be flown in the loop is nearly
|
(a) 0.2 A |
(b) 0.4A |
(c) 4A |
(d) 40A |