Q.1

A parallel plate capacitor has surface density of rs C/m2. The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

Q.2

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

  • F= Q4 Q3 Q2 Q1
  • F= Q4 + Q3 + Q2 + Q1
  • F = Q4 + Q3 + Q2 + Q1
  • F = Q4 Q3 Q2 Q1
Q.3

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

  • F= Q4 Q3 Q2 Q1
  • F= Q4 + Q3 + Q2 + Q1
  • F = Q4 + Q3 + Q2 + Q1
  • F = Q4 Q3 Q2 Q1
Q.4

The magnitude plot of a composite signal x(t) = e3jt + e4jt is __________ .

  • Half wave rectified sinusoid
  • Full wave rectified sinusoid
  • Exponentially increasing sinusoid
  • Exponentially decreasing sinusoid
Q.5

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

  • 1 x 10-9 V
  • 5 x 10-9 V
  • 2.5 x 10-9 V
  • 0.5 x 10-9 V
Q.6

VR at t < T, t = ∞

  • 500e-40x104t, 0
  • 100e-40x103t, 0
  • 100e-40x106t, 0
  • 100e-40x104t, 0
Q.7

VR at t < T, t = ∞

  • 500e-40x104t, 0
  • 100e-40x103t, 0
  • 100e-40x106t, 0
  • 100e-40x104t, 0
Q.8

Find current i.

  • 4/5 A
  • 5/4 A
  • 1.23 A
  • 1.32 A
Q.9

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.10

In x = the value of x is

  • 10
  • 25
  • 36
  • 44
Q.11

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.12

When x(n) is real then the Fourier series coefficients are correlated as __________ .

  • a-k = ak*
  • ak = ak*
  • ak+1 = ak*
  • a-k+1 = ak*
Q.13

When x(n) is real then the Fourier series coefficients are correlated as __________ .

  • a-k = ak*
  • ak = ak*
  • ak+1 = ak*
  • a-k+1 = ak*
Q.14

In x = the value of x is

  • 10
  • 25
  • 36
  • 44
Q.15

Using 4-bit numbers (n =if k = 00112, how is k expressed in 2's complement?

  • 10112
  • 11012
  • 11002
  • 01012
Q.16

A parallel plate capacitor has surface density of rs C/m2. The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

Q.17

The Nyquist sampling interval, for the signal sine (700t) + sine (500t) is

Q.18

Which of the following capabilities are available in a Universal Shift Register?

  1. Shift left
  2. Shift right
  3. Parallel load
  4. Serial add
Select the correct answer from the codes given below:
  • 2 and 4 only
  • 1, 2 and 3
  • 1, 2 and 4
  • 1, 3 and 4
Q.19

The system which is unstable is __________ .

  • h(t) = RCt . e-1 u(t)
    2-755-30-1.png
    2-755-30-2.png
    2-755-30-3.png
Q.20

VR at t < T, t = ∞

  • 500e-40x104t, 0
  • 100e-40x103t, 0
  • 100e-40x106t, 0
  • 100e-40x104t, 0
Q.21

Find current i.

  • 4/5 A
  • 5/4 A
  • 1.23 A
  • 1.32 A
Q.22

The Nyquist sampling interval, for the signal sine (700t) + sine (500t) is

Q.23

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.24

A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q =If each of R, L and C is doubled from its original value, the new Q of the circuit is

  • 25
  • 50
  • 100
  • 200
Q.25

Which of the following antennas uses a number of varying length parallel elements?

  • Helical antenna
  • Pyramidal Horn
  • Comer reflection antenna
  • Yagi-Uda antenna
Q.26

The Nyquist sampling interval, for the signal sine (700t) + sine (500t) is

Q.27

The system which is unstable is __________ .

  • h(t) = RCt . e-1 u(t)
    2-755-30-1.png
    2-755-30-2.png
    2-755-30-3.png
Q.28

VR at t < T, t = ∞

  • 500e-40x104t, 0
  • 100e-40x103t, 0
  • 100e-40x106t, 0
  • 100e-40x104t, 0
Q.29

Find current i.

  • 4/5 A
  • 5/4 A
  • 1.23 A
  • 1.32 A
Q.30

Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 1017 cm-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 1014F. cm-1.
Thermal voltage = 26mV
Permittivity of free space = 8.x 10-14F. cm-1.
Dielectric constant of silicon =A built in potential of the junction.

  • is 0.70V
  • is 0.76V
  • is 0.82V
  • cannot be estimated from the data given
Q.31

Which of the following capabilities are available in a Universal Shift Register?

  1. Shift left
  2. Shift right
  3. Parallel load
  4. Serial add
Select the correct answer from the codes given below:
  • 2 and 4 only
  • 1, 2 and 3
  • 1, 2 and 4
  • 1, 3 and 4
Q.32

For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is

  • 360°
  • 180°
  • 90°
  • 45°
Q.33

Consider the following, logic diagram :

The count sequence of the above logic diagram is :

  • 0000 to 1111
  • 0000 to 1001
  • 0000 to 1010
  • 1001 to 0000
Q.34

Consider the following, logic diagram :

The count sequence of the above logic diagram is :

  • 0000 to 1111
  • 0000 to 1001
  • 0000 to 1010
  • 1001 to 0000
Q.35

Find current i.

  • 4/5 A
  • 5/4 A
  • 1.23 A
  • 1.32 A
Q.36

The system which is unstable is __________ .

  • h(t) = RCt . e-1 u(t)
    2-755-30-1.png
    2-755-30-2.png
    2-755-30-3.png
Q.37

The system which is unstable is __________ .

  • h(t) = RCt . e-1 u(t)
    2-755-30-1.png
    2-755-30-2.png
    2-755-30-3.png
Q.38

Which of the following antennas uses a number of varying length parallel elements?

  • Helical antenna
  • Pyramidal Horn
  • Comer reflection antenna
  • Yagi-Uda antenna
Q.39

Laplace transform of unit triplet function is __________ .

  • 1
    3-05-67-4.png
  • s
    3-05-67-4.png
  • s2
    3-05-67-4.png
Q.40

Consider two independent random variables x and y with identical distributions. The variables X and Y take1 and2 with probabilities and respectively. What is the conditional probability P(X + Y =X - Y = 0)?

  • 0
    6-03-21-2.png
    6-03-21-3.png
  • 1
Q.41

A 2 μF capacitor is shunted by a 1 k&ohm; maintained at temperatureK. The rms noise voltage across the capacitor over the entire frequency band is:

  • 6.25 x 10-8 V
  • 5.25 x 10-6 V
  • 6.25 x 10-6 V
  • 5.25 x 10-8 V
Q.42

The input impedance of figure given below is

  • Rg(1 + Av)
    15-03-23-2.png
    15-03-23-4.png
  • Rg(1 - Av)
    15-03-23-4.png
Q.43

Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 1017 cm-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 1014F. cm-1.
Thermal voltage = 26mV
Permittivity of free space = 8.x 10-14F. cm-1.
Dielectric constant of silicon =A built in potential of the junction.

  • is 0.70V
  • is 0.76V
  • is 0.82V
  • cannot be estimated from the data given
Q.44

Consider the following, logic diagram :

The count sequence of the above logic diagram is :

  • 0000 to 1111
  • 0000 to 1001
  • 0000 to 1010
  • 1001 to 0000
Q.45

Laplace transform of unit triplet function is __________ .

  • 1
    3-05-67-4.png
  • s
    3-05-67-4.png
  • s2
    3-05-67-4.png
Q.46

The range of memory location in given memory interfacing scheme is

  • 0000H - 07FFH
  • F800H - FFFFH
  • 0000H - 03FFH
  • 0000H - 3FFFH
Q.47

Consider the following, logic diagram :

The count sequence of the above logic diagram is :

  • 0000 to 1111
  • 0000 to 1001
  • 0000 to 1010
  • 1001 to 0000
Q.48

Consider two independent random variables x and y with identical distributions. The variables X and Y take1 and2 with probabilities and respectively. What is the conditional probability P(X + Y =X - Y = 0)?

  • 0
    6-03-21-2.png
    6-03-21-3.png
  • 1
Q.49

For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is

  • 360°
  • 180°
  • 90°
  • 45°
Q.50

Consider two independent random variables x and y with identical distributions. The variables X and Y take1 and2 with probabilities and respectively. What is the conditional probability P(X + Y =X - Y = 0)?

  • 0
    6-03-21-2.png
    6-03-21-3.png
  • 1
0 h : 0 m : 1 s