Choose the most appropriate word from the options given below to complete the following sentence:
It was her view that the country’s problems had been_________ by foreign technocrats, so that to invite them to come back would be counter-productive.

**A. ** Identified

**B. ** ascertained

**C. ** Texacerbated

**D. ** Analysed

**Answer : ****Option C**

**Explaination / Solution: **

The sentence implies that technocrats are counterproductive (negative). Only (C) can bring the same meaning.

The sentence implies that technocrats are counterproductive (negative). Only (C) can bring the same meaning.

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The output Y in the circuit below is always ‘1’ when

**A. ** two or more of the inputs P, Q, R are ‘0’

**B. ** two or more of the inputs P, Q, R are ‘1’

**C. ** any odd number of the inputs P, Q, R is ‘0’

**D. ** any odd number of the inputs P, Q, R is ‘1’

**Answer : ****Option B**

**Explaination / Solution: **

The given circuit is shown below:

The given circuit is shown below:

If any two or more inputs are ‘1’ then output y will be 1.

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An 8085 assembly language program is given below. Assume that the carry
flag is initially unset. The content of the accumulator after the execution of the
program is

**A. ** 8 CH

**B. ** 64 H

**C. ** 23 H

**D. ** 15 H

**Answer : ****Option C**

**Explaination / Solution: **

Initially Carry Flag, C = 0 MVI A, 07 H ; A = 0000 0111 RLC ; Rotate left without carry. A = 00001110 MVO B, A ; B = A = 00001110 RLC ; A = 00011100 RLC ; A = 00111000 ADD B ; A = 00111000 ; +00001110 ; 01000110 RRC ; Rotate Right with out carry, A = 0010 0011 Thus A = 23 H

Initially Carry Flag, C = 0 MVI A, 07 H ; A = 0000 0111 RLC ; Rotate left without carry. A = 00001110 MVO B, A ; B = A = 00001110 RLC ; A = 00011100 RLC ; A = 00111000 ADD B ; A = 00111000 ; +00001110 ; 01000110 RRC ; Rotate Right with out carry, A = 0010 0011 Thus A = 23 H

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A Zener diode, when used in voltage stabilization circuits, is biased in

**A. ** reverse bias region below the breakdown voltage

**B. ** reverse breakdown region

**C. ** forward bias region

**D. ** forward bias constant current mode

**Answer : ****Option B**

**Explaination / Solution: **

Zener diode operates in reverse breakdown region.

Zener diode operates in reverse breakdown region.

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The channel resistance of an N-channel JFET shown in the figure below is 600Ω when the full channel thickness (t_{ch}) of 10μm is available for conduction. The
built-in voltage of the gate P^{+ }N junction (V_{bi}) is -1 V. When the gate to source
voltage (V_{GS}) is 0 V, the channel is depleted by 1 μm on each side due to the built
in voltage and hence the thickness available for conduction is only 8 μm

**A. ** 360 Ω

**B. ** 917 Ω

**C. ** 1000 Ω

**D. ** 3000 Ω

**Answer : ****Option B**

**Explaination / Solution: **

The channel resistance when VGS = -3 V is

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The modes in a rectangular waveguide are denoted by where
m n and are the eigen numbers along the larger and smaller dimensions of the
waveguide respectively. Which one of the following statements is TRUE?

**A. ** The TM_{10} mode of the wave does not exist

**B. ** The TE_{10} mode of the wave does not exist

**C. ** The TM_{10} and TE_{10} the modes both exist and have the same cut-off
frequencies

**D. ** The TM_{10} and TM_{01} modes both exist and have the same cut-off
frequencies

**Answer : ****Option A**

**Explaination / Solution: **

TM_{11} is the lowest order mode of all the TM_{mn} modes

TM

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In the circuit shown below, the network N is described by the following Y matrix: the voltage gain (V_{2}/V_{1})is

**A. ** 1/90

**B. ** -1/90

**C. ** -1/99

**D. ** -1/11

**Answer : ****Option D**

**Explaination / Solution: **

From given admittance matrix we get

From given admittance matrix we get

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For the transfer function G(j𝜔) = 5 + j𝜔, the corresponding Nyquist plot for positive frequency has the form

**A. **

**B. **

**C. **

**D. **

**Answer : ****Option A**

**Explaination / Solution: **

G(j𝜔) = 5 + j𝜔 Here σ = 5. Thus G(j𝜔) is a straight line parallel to j𝜔 axis

G(j𝜔) = 5 + j𝜔 Here σ = 5. Thus G(j𝜔) is a straight line parallel to j𝜔 axis

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A system is defined by its impulse response The system is

**A. ** stable and causal

**B. ** causal but not stable

**C. ** unstable and non-causal

**D. ** stable but not causal

**Answer : ****Option B**

**Explaination / Solution: **

No Explaination.

No Explaination.

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A current sheet lies on the dielectric interface x = 0
between two dielectric media with ε_{r1} = 5, μ_{r1} = 1 in Region -1 (x < 0) and εr2 = 5, μr2 = 2 in Region -2(x > 0) . If the magnetic field in Region-1 at
x = 0^{-} is the magnetic field in Region-2 at x = 0^{+} is

**A. **

**B. **

**C. **

**D. **

**Answer : ****Option A**

**Explaination / Solution: **

From boundary condition

From boundary condition

Then from Boundary condition

Comparing we get A = 30 and B =- 10

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