GPL - Gate Question |

X Close

You need to enable javascript to view this page properly.

Branch

All

Loading

67.

The transfer function of a system is given by H(s) = 1/[s²(s-2)]. The impulse response of the system is: (* denotes convolution, and U(t) is unit step function) [1 mark]
(a) (t²*e^-2t)U(t)
(b) (t*e^2t)U(t)
(c) (t*e^-2t)U(t)
(d) (t*e^-2t)U(t)

asked in Electronics and Communication Engineering, 2001

View Comments [0 Reply]
68.

If each branch of a Delta circuit has impedance √3Z, then each branch of the equivalent Wye circuit has impedance. [1 mark]
(a) Z/√3
(b) 3Z
(c) 3√3Z
(d) Z/3

asked in Electronics and Communication Engineering, 2001

View Comments [0 Reply]
69.

The voltage e₀ in figure is

[1 mark]
(a) 2V
(b) 4/3 V
(c) 4V
(d) 8V

asked in Electronics and Communication Engineering, 2001

View Comments [0 Reply]
70.

Consider a linear array of two half-wave dipoles A and B as shown in Figure. The dipoles are λ/4 apart and are excited in such a way that the current on element B legs that on element A by 90° in phase.
(a) Obtain the expression for the radiation pattern for E₀ in the XY plane (i.e,
θ=90°)
(b) Sketch the radiation pattern obtained in (a).

[5 marks]

asked in Electronics and Communication Engineering, 2002

View Comments [0 Reply]
71.

Consider a parallel plate wave-guide with plate separation d as shown in Figure electric and magnetic fields for the TEM-mode are given by
E_x = E_o e^-jkz+jωtH_y = E_o e^-jkz+jωt /n
(a) Determine the surface charge densities p_s on the plates at x=0 and x=d.
(b) Determine the surface current densities J_s on the same plates.
(c) Prove that p_s and J_s satisfy the current continuity condition.

[5 marks]

asked in Electronics and Communication Engineering, 2002

View Comments [0 Reply]
72.

Transmission line transformation of a load Z_L and Z is given by
Z = Z_o (Z_L+jZ_otan(βI))/(Z_o+jZ_Ltan(βI))
(a) Show that the above transformation implies that the impedance Z gets transformed to Z*_L for real Z.
(b) What is the importance of the result derived in (a)?
[5 marks]

asked in Electronics and Communication Engineering, 2002

View Comments [0 Reply]

806 1 ...‹‹10 1112 13 14 ›› ... 135

High Frequency Word List with Mnemonics

GPL Dictionary is fast way to learn words with mnemonics.
It contains high frequency word list which are mostly asked in various examinations.
It is dedicated for student appearing for PSUs, GRE, UPSC or any other exams in which vocabulary test is taken.
User can save their own mnemonics (key and link).

Check Now