WorksheetsSS_unit 1 Quiz_PRIW
Total questions: 30
Worksheet time: 30mins
Which among the below specified conditions/cases of discrete time in terms of real constant ‘a’, represents the double-sided decaying exponential signal?
a) a > 1
b) 0 < a < 1
c) a < -1
d) -1 < a < 0
A system is said to be shift invariant only if______
a) a shift in the input signal also results in the corresponding shift in the output
b) a shift in the input signal does not exhibit the corresponding shift in the output
c) a shifting level does not vary in an input as well as output
d) a shifting at input does not affect the output
Which block of the discrete time systems requires memory in order to store the previous input?
a) Adder
b) Signal Multiplier
c) Unit Delay
d) Unit Advance
Which type/s of discrete-time system do/does not exhibit the necessity of any feedback?
a) Recursive Systems
b) Non-recursive Systems
c) Both a & b
d) None of the above
What is the full form of BIBO?
a) Boundary input Boundary Output
b) Boundary Input Bounded Output
c) Bonded Input Bonded Output
d) Bounded Input, Bounded Output
The system is stable when y(t)= tx(t).
a) True
b) False
The type of systems which are characterized by input and the output quantized at certain levels are called as
a) analog
b) discrete
c) continuous
d) digital
A system which is linear is said to obey the rules of
a) scaling
b) additivity
c) both scaling and additivity
d) homogeneity
A time invariant system is a system whose output
a) increases with a delay in input
b) decreases with a delay in input
c) remains same with a delay in input
d) vanishes with a delay in input
A system is said to be defined as non causal, when
a) the output at the present depends on the input at an earlier time
b) the output at the present does not depend on the factor of time at all
c) the output at the present depends on the input at the current time
d) the output at the present depends on the input at a time instant in the future
Amplifiers, motors, filters etc. are examples for which type of system?
a) Distributed parameter systems
b) Unstable systems
c) Discrete time systems
d) Continuous time systems
a) Static, linear, causal and time variant
b) Dynamic, non – linear, causal and time invariant
c) Static, non – linear, causal and time variant
d) Dynamic, non – linear, causal and time variant
What is the period of the following signal, x(t) = sin(18*pi*t + 78 deg)?
a) 1⁄9
b) 2⁄9
c) 1⁄3
d) 4⁄9
For the signal, x(t) = log(cos(a*pi*t+d)) for a = 50 Hz, what is the time period of the signal, if periodic?
a) 0.16s
b) 0.08s
c) 0.12s
d) 0.04s
Find where the signal x(t) = 1/(t2 – 3t + 2) finds its maximum value between (1.25, 1.75):
a) 1.40
b) 1.45
c) 1.55
d) 1.50
A signal is a physical quantity which does not vary with ____________
a) Time
b) Space
c) Independent Variables
d) Dependent Variables
Sum of two periodic signals is a periodic signal when the ratio of their time periods is ____________
a) A rational number
b) An irrational number
c) A complex number
d) An integer
Determine the Time period of: x(t)=3 cos(20t+5)+sin(8t-3).
a) 1/10 sec
b) 1/20 sec
c) 2/5 sec
d 2/4 sec
What is the even component of a discrete-time signal?
Determine the odd component of the signal: x(t)=cost+sint.
a) sint
b) 2sint
c) cost
d) 2cost
Is the signal sin(t) anti-symmetric?
a) YES
b) NO
Determine the power of the signal: x(t) = cos(t).
a) 1/2
b) 1
c) 3/2
d) 2
Is the following signal an energy signal?
x(t) = u(t) – u(t – 1)
a) YES
b) NO
Discrete time signal is derived from continuous time signal by _____________ process.
a) Addition
b) Multiplying
c) Sampling
d) Addition and multiplication
When x(t ) is said to be non periodic signal?
a) If the equation x (t) = x (t + T) is satisfied for all values of T
b) If the equation x (t) = x (t + T) is satisfied for only one value of T
c) If the equation x (t) = x (t + T) is satisfied for no values of T
d) If the equation x (t) = x (t + T) is satisfied for only odd values of T
Fundamental frequency x[n] is given by ___________
a) Omega = 2*pi /N
b) Omega = 2*pi*N
c) Omega = 4*pi *2N
d) Omega = pi / N
Noise generated by an amplifier of radio is an example for?
a) Discrete signal
b) Deterministic signal
c) Random signal
d) Periodic signal
Which among the following is not a linear system?
What is the total energy of rectangular pulse shown in fig b?
a) 8A2
b) 4A
c) 2A
d) 4A2
Which of the component performs integration operation?
a) Resistor
b) Diode
c) Capacitor
d) Inductor
