Related Questions

It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to
A f
B $$\frac{1}{{\text{f}}}$$
C $$\frac{1}{{{{\text{f}}^2}}}$$
D f2
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the
A $$\pi $$ mode
B $$\frac{\pi }{2}$$ mode
C $$2\pi $$ mode
D $$\frac{\pi }{4}$$ mode
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to
A Reduce the spurious frequency problem
B Increase the frequency stability of the synthesizer
C Reduce the number of decades
D Reduce the number of crystals required
The frequency of oscillation of a compound pendulum is
A 1/2π √g.h/k2G +h2
B 1/2π √k2G +h2/g.h
C 2π√g.h/k2G +h2
D 2π√k2G +h2/g.h
The frequency of oscillation of a torsional pendulum is
A 2πkG/r √g/I
B r/2πkG√g/I
C 2πkG/r√I/g
D r/2πkG√I/g
The frequency of oscillation at compared to earth will be
A 6 times more
B 6 times less
C 2.44 times more
D 2.44 times less
When a person sitting on a swing stands up on the swing, the frequency of oscillation
A Decreases
B Increases
C Becomes infinite
D Does not change
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be
A Less
B More
C Same
D Data are insufficient to determine same
The frequency of oscillation on moon as compared to that on earth, will be
A 2.44 times more
B 2.44 times less
C 3 times less
D 3 times more
The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
A $$\frac{{\text{E}}}{2}$$
B 2E
C Slightly less than E
D E

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