Signal and Control Mcqs

Hello friends,
i am a student of Electrical Power engineering and i have to appear for a test in which i can face questions related to signals and system, control and dsp. That is why i need answer to some of questions below, any help will be much appreciated. Thanks

1) Period of infinite continuous fourier series == ?
a. N
b. N+M
c. infinite
d. 2*pi/n

2) ROC converges if poles and zeros lie inside == ?
a. Origion
b. Z=1

3) Which modulation has higher data rates == ?
a. fm
b. am
c. qam
d. qpsk

4) In LTI system is characterized by == ?
a. Impulse input
b. Step input

5) Transfer function is == ?
a. Mathematical model
b. System with no physical structure
c. Can be calculated through differential equations

6) If ROC (Region of convergence) does not include unit circle then == ?
a. Fourier transform converges
b. Z-transform converges
c. Harley transform converges

7) Fastest achievable Response without overshooting == ?
a. under damped
b. overdamped
c. critically damped

8) If z transform lies in ROC then == ?
A. System is stable
B. Inverse of system is stable
C. Both system and its inverse are unstable
D. Both system and its inverse are stable

9) Under damped response have
a. damping ratio>1
b. 0>damping ratio

1=c
2,z=1
4=1
6=b
7=a
8=a
9=a
10=d
13=2
18=system stable

5=a

don't you think 2=a, 7=c, 9=b ?

Scr goes on saturation when gate cathode junction is........

2.signal x[n]=cos(pi/4) has a period of....
3.FIR filters can be designed to achieve.......
4.one of properties of FIR filters is that...... Is not required fir filter.

Any one can answer me these questions..... Plz

4.Oscillator whose frequency can be changed by a variable DC control voltage is.......
5.For RLC circuit at low frequency z is larger then because........
6.Circuit that produces an out put wave from with any external signal source...
7.vice voltage of transistor is very important in checking weather the transistor is.......
8...........is maximum when rlc circuit is in resonance.
9.power in inductive reactance of Circuit is.........
10.power which is actually dissipated in circuit resistance is called......
11........is product of RMS value of apply valtage and circuit current.
12.Circuit current is ......... At resonance.
13.net reactance is ........ When RLC circuit is in resonance.

Plz give me a answers of these questions

Plz give me answers of these questions thankx

i know answers to most of them, do you have fesco mcqs?

Yes kindly give me answer because this my lesco test if u know the answer kindly me answer

These questions are fresco test.....

9=b
3=c
4=a
10=d
5=a

I remember these questions . answer them plz ??

In a sub marine power system power is transmitted through ______ cable.

In a transformer leakage flux of each winding is proportional to current in that winding beacause ____

For Common amplifier in BJT we mostly used _____

please tell me also the ans of these ...

plz answer other questions too ...

Low voltage
Leakage paths don't saturate
COmmon gate or common base

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In Z-transform, ROC always lies around:

a. origin b. pole c. zero d. z=1 e. z=-1

origin

share the complete list of mcqs from fesco test or anyother as text or doc file. thanks

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net reactance is ____ when RLC circuit is in resonance.

_____ is product of RMS value of applied voltage and circuit current.

Reverse Biase Of JFET produces a depletion region within the channel thus ….

Pole of s-plane gives the information about == ?

ROC converges if poles and zeros lies inside == ?