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ISRO ECE 2013 | Digital Logic
If a counter having $10$ flip flops is initially at $0,$ what count will it hold after $2060$ pulses?$000\; 000\; 1100$$000 \;001\; 1100$$000 \;001\; 1000$$000 \;000\; 11...
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ISRO ECE 2013 | 2s compliment number
The two numbers represented in signed $\text{2s}$ complement form are $\text{P}= 11101101$ and $\text{Q}= 11100110.$ If $\text{Q}$ is subtracted from $\text{P},$ the valu...
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ISRO ECE 2013 |: Digital Logic
Which of the following is the Boolean function for majority voting, assuming $\text{A, B, C}$ are inputs and $\text{Y}$ is output?$\text{Y = AB + AC + BC}$$\text{Y = A + ...
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ISRO ECE 2013 | Digital Logic
What is the frequency and duty cycle of output $\text{Y},$ when CLK frequency is $\text{1MHz} \;@\; 50\%$ duty cyle?$500 \;\text{KHz} \;@\; 50\%$ duty cycle$500 \;\text{K...
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ISRO ECE 2014 | : Network
In satellite communication, scrambling is mainly used for:Clock recoveryEncryptionlimiting power spectral densitybandwidth efficiency
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ISRO ECE 2014 | Digital logic
  In the following circuit, Y can be expressed as :$\text{Y = BC + A}$$\text{Y = AC}' + \text{BC}$$\text{Y = C}$$\text{Y = B}$
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ISRO ECE 2014 | Computer Networks
In a fiber-optic cable, which phenomenon occurs for signal to propagate along the inner core:ModulationReflectionRefractionAll of the above
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ISRO ECE 2014 | Computer Network
Match the following:AGaussian distribution1Calls on a telephone channelBRayleigh distribution 2Random numberCPoisson distribution3Thermal noiseDUniform distribution4Fadin...
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ISRO ECE 2015 | Computer networks
A communication channel is having a bandwidth of $3000$ Hz. The transmitted power is such that the received Signal-to-Noise ratio is $1023.$ The maximum data rate that ca...
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ISRO ECE 2015 | Pipelining
Pipelining technique is used in microprocessor to improve which of the following parameter?Power dissipationInterrupt latencyDie sizeMaximum clock frequency
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ISRO ECE 2015 | Flipflop
 What is the functionality of following digital circuit? A is input data, CLK is system clock ind Y is output.Falling edge detection of input AClock division by $2$Rising...
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ISRO 2015-EC Finte State Machine
The following Finite State Machine (FSM) is used to detect a particular pattern in input data stream. Whenever the pattern is matched at input, output is set to '1' or el...
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ISRO 2016-EC Combinational circuit
Given circuit represents(a) INVERTER(b) AND(c) OR(d) NOR
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ISRO CSE 2016 | Question: EC Calculus
Evaluate $\int_0^1 \int_0^{\sqrt{1+x^2}} \frac{d x \cdot d y}{\left(1+x^2+y^2\right)}$$\frac{\pi}{2}[\log (1+\sqrt{2})]$$\frac{\pi}{4}[\log (1+\sqrt{2})]$$\frac{\pi}{2}[\...
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ISRO2016 EC Probability
A person on a trip has a choice between a private car and public transport. The probability of using a private car is $0.45.$ While using public transport, the further ch...
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ISRO ECE 2016 | Mathematics
The value of $\lim _{x \rightarrow 8}\left(\frac{x^{1 / 3}-2}{x-8}\right)$ is$1/4$$1/8$$1/12$$1/16$
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ISRO ECE 2016 | combinational logic
 in given combinational logic $X=?$$X = AB'C' +A'BC'+ A'B'C+ ABC$$X = A'BC +A'BC'+ AB'C+ A'B'C'$$X = AB + BC + AC$$X= A'B'+B'C'+A'C'$
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ISRO2016 -EC Digital Logic
 $000, 001, 010, 011, 100\; \&$ repeats$100, 011, 010, 001, 000\; \&$ repeat$010, 011, 100, 000, 001\; \&$ repeats$101, 110, 111, 000, 001, 010, 011, 100 \;\&$ repeats
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ISRO ECE 2015 | Networks
A signal transmitted from an Earth station bounces back from a geostationary satellite, with an altitude of $35864$ km from the Earth surface. The range from the Earth st...
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ISRO ECE 2015 | Networks
Which of the following modulation scheme requires minimum power for transmission?QPSK$16$-QAM$8$-PSK$64$-QAM
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ISRO ECE 2016 | Digital Logic
Simplify Boolean function represented in sum of product of min-terms, $\text{F}(x, y, z)= \Sigma(0, 2, 4,5, 6)$ $z' + xy'$$x' y'z' + xyz+ xy'z'$$xyz + x' + y' + z'$$xy+yz...
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ISRO ECE 2016 | Digital logic
How is the status of the carry, auxiliary carry and parity flag affected if write instruction?MOV A,#9C ADD A,#64H$\text{CY = 0, AC = 0, P = 0}$$\text{CY = 1, AC = 1, P =...
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ISRO ECE 2016 | Networks
A typical optical fiber hashigh refractive index core & low refractive index claddingLow refractive index core & high refractive index claddingUniform refractive index co...
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ISRO ECE 2016 | Networks
Hamming codes are used forBurst error correctionSignal error correctionBoth (a) and (b)None of the above
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ISRO ECE 2016 | Networks
An FM signal at $10.7$ MHz IF needs to be digitized for demodulation in a digital domain. If the bandwidth of this signal is $200$ kHz, the maximum usable sampling freque...
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ISRO ECE 2016 | Digital Logic
For a $10$-bit digital ramp ADC using $500\;\text{kHz}$ clock, the maximum conversion time is$2048\; \mu \;\text{S}$$2046\; \mu \;\text{S}$$2064\; \mu \;\text{S}$$2084\; ...
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ISRO ECE 2016 | Digital Logic
A $10$-bit DAC has a step size of $\text{10mV}.$What is its Full scale O/P voltage and the percentage resolution?$10.24\text{V}, 0.2\%$$10.23\text{V}, 0.5\%$$10.23\text{V...
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ISRO ECE 2016 | Digital logic
Which shift register counter requires the most decoding circuitry?Johnson CounterRing CounterRipple Counter$\text{MOD}$ counter
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ISRO ECE 2016 | Digital Logic
How many inputs & outputs does a full adder have?$3, 2$$2, 3$$3, 3$$2, 2$
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ISRO 2016-ECE Digital Logic
A 1 MHz clock signal is applied to a J-K Flip Flop with J=K=1. What is the frequency of the Flip-Flop 0/P signal?(a) 2 MHz(b) 500 kHz(c) 250 kHz(d) 500 MHz
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