Dynamic Systems and Circuit Analysis Quiz

Which one most appropriate dynamic system?

• y(n) + y(n - 1) + y(n + 1)

• y(n) =x(n)

• y(n) + y(n - 1) + y(n + 3) = 0

• y(n) + y(n - 1)

Consider Pole zero diagram as shown, If two Poles are moved in opposite direction towards ω = p/2 and -p/2, the filter will be

• change to high pass filter

• change to LPF

• change to Band Pass filter

• remains same

Assertion (A): Heaviside partial expansion gives a simple procedure to find inverse Laplace transform of the terms having a complex conjugate pair of roots. Reason (R): If I(s) = P(s)/Q(s) and all roots of Q(s) = 0 are simple, i(t) will have terms with exponentials having real exponents only.

• Both A and R are correct but R is not correct explanation of A

• Both A and R are correct and R is correct explanation of A

• A is false, R is true

• A is true, R is false

If f(t) = 1, F(jω) =

• piδ (ω)

• pi

• 2pi

• 2piδ (pi)

Which of the following can be impulse response of a casual system?

• 
• 
• 
• 

Poynting vector is associated with which of the following?

• Flux in magnetic field

• Charge in electrostatic field

• Power flow in electromagnetic

• Current in electrostatic field

Good smoothing factor of a coil depends on

• cross-sectional area of the wire of the coil

• property of the wire of the coil

• inductance of the coil

• terminal voltage

To couple a coaxial line to a parallel to wire line it is best to use a

• directional coupler

• slotted line

• quarter wave transformer

• balun

The shunt admittance of a transmission line is given by

• γ = G + jωC

• γ = R - jωL

• γ = jωGC

• γ = R + jωL

An electric charge Q is placed in a dielectric medium which of the following quantities are independent of the dielectric constant ε of the medium

• displacement density D and displacement φ

• electric potential V and electric field intensity E

• electric potential V and displacement φ

• electric field intensity E and displacement φ