ISRO ICRB Scientist/Engineer 'SC' Computer Science & Engineering ICRB Pattern

ISRO Scientist/Engineer CS Solved Papers

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Marking scheme: +3.00 positive, -0.75 negative (ICRB Standard).

989 Questions Page 36 of 40
876

_____ has the maximum fan out capacity

ISRO Scientist/Engineer 'SC' Electronics 2011 Digital Electronics
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877

If Z transform of $x(n)$ is $X(z)$ then the Z transform of $x(n-k)$ is

ISRO Scientist/Engineer 'SC' Electronics 2011 Signals Systems
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878

The following code will implement a

process (clk, d) begin
    if (clk = '1') then
        q <= d;
    end if;
end process
ISRO Scientist/Engineer 'SC' Electronics 2011 Digital Electronics
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879

The greatest negative number which can be stored in a 8-bit register using 2's complement arithmetic is

ISRO Scientist/Engineer 'SC' Electronics 2011 Digital Electronics
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880

Two coupled coils have self inductances $L_1 = 10\text{mH}$ and $L_2 = 20\text{mH}$. The co-efficient of coupling ($K$) being 0.75 in the air. Voltage in the second coil when the current in circuit is given by $I = 2\sin(314t)\text{ A}$ is

ISRO Scientist/Engineer 'SC' Electronics 2011 Network Theory
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881

In a radar system, if the peak transmitted power is increased by a factor of 16 and the antenna diameter is increased by a factor of 2, then the maximum range will increase by a factor of

ISRO Scientist/Engineer 'SC' Electronics 2011 Radar Engineering
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882

The transconductance $g_m$ of an FET in the saturation region equals

ISRO Scientist/Engineer 'SC' Electronics 2011 Electronic Devices
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883

The transistor amplifier with 85% of efficiency is likely to be

ISRO Scientist/Engineer 'SC' Electronics 2011 Analog Circuits
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884

A run-time stack cannot be used in a round-robin scheduling system because of the _____ nature of scheduling.

ISRO Scientist/Engineer 'SC' Electronics 2011 Operating Systems
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885

$(3 + i) / (5 + 5i)$ is same as

ISRO Scientist/Engineer 'SC' Electronics 2011 Engineering Mathematics
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886

The modulation index of an amplitude modulated wave is changed from 0 to 1. the transmitted power is

ISRO Scientist/Engineer 'SC' Electronics 2011 Communications Engineering
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887

In a communication system, each message (1 or 0) is transmitted three times in order to reduce the probability of error. The detection is based on the majority rule at the receiver. If $P_e$ is the probability of bit error, the probability of error for this communication channel will be

ISRO Scientist/Engineer 'SC' Electronics 2011 Communications Engineering
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888

For a satellite transponder with a receiver antenna gain of 12 dB, an LNA gain of 10 dB, and equivalent noise temperature of 26 dBK, the $G/T_e$ is

ISRO Scientist/Engineer 'SC' Electronics 2011 Satellite Communications
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889

_____ current is the leakage current that flows through a photo diode with no input used in as light detectors.

ISRO Scientist/Engineer 'SC' Electronics 2011 Optoelectronic Devices
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890

The figure of merit of a logic family is given by

ISRO Scientist/Engineer 'SC' Electronics 2011 Digital Electronics
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891

_____ is defined as the time delay that a signal component of frequency undergoes as it passes from the input to output of the system.

ISRO Scientist/Engineer 'SC' Electronics 2011 Signals Systems
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892

Which statement is true regarding a behavior modeling in VHDL

ISRO Scientist/Engineer 'SC' Electronics 2011 Digital Electronics
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893

The process of imitating one system with another so that the imitating systems accepts the same data, executes same programs and achieves same results as the imitated systems is known as

ISRO Scientist/Engineer 'SC' Electronics 2011 Computer Systems
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894

The values of R, L and C in series RLC circuit that resonates at 1.5 KHz and consumes 50W from a 50V ac source operating at the resonant frequency. The bandwidth is 0.75 KHz.

ISRO Scientist/Engineer 'SC' Electronics 2011 Network Theory
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895

When VSWR is 3, the magnitude of the reflection co-efficient will be

ISRO Scientist/Engineer 'SC' Electronics 2011 Transmission Lines
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896

The conductivity of the intrinsic germanium at $300^\circ\text{K}$ is _____ When, $n_i$ at $300^\circ\text{K} = 2.5 \times 10^{13}/\text{cm}^3$ and $\mu_n$ and $\mu_p$ in germanium are 3800 and $1800\text{ cm}^2/\text{Vs}$ respectively.

ISRO Scientist/Engineer 'SC' Electronics 2011 Electronic Devices
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897

As compared to a full wave rectifier using 2 diodes, the four diode bridge rectifier has the dominant advantage of

ISRO Scientist/Engineer 'SC' Electronics 2011 Analog Circuits
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898

In a real time system, the simplest scheme that allows the operating system to allocate memory to two processes simultaneously is

ISRO Scientist/Engineer 'SC' Electronics 2011 Operating Systems
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899

$$(\cos 5\theta - i\sin 5\theta)^2\text{ is same as}$$

ISRO Scientist/Engineer 'SC' Electronics 2011 Engineering Mathematics
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900

In case of which of the following, an increase on the modulation index leads to increase in bandwidth

ISRO Scientist/Engineer 'SC' Electronics 2011 Communications Engineering
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