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⇒ A sequence x(n) with the z transform X(z) = z4 + z2 - 2z + 2 - 3z - 4 is applied as an input to a linear, time invariant system with the impulse response h(n) = 2δ(n - 3) wh-6zero2-4
⇒ In the signal flow graph in the given figure the number of forward paths and pairs of non-touching loops are respecti3 and 13 and 24 and 22 and 4
⇒ In flip flops the duration of clock pulse is about3 ns10 ns25 ns50 ns
⇒ What is the chemical bonding in silicon semiconductor?MetallicIonicCovalentvan der Waals
⇒ Which of the following should dominant wave have?Lowest cut off frequencyHighest cut off frequencyNo attenuationNo phase shift
⇒ Which of the following has unique representation of 0?sign magnitude1's complement2's complementboth (b) and (c)
⇒ A junction FET, can be used as a voltage variable resistorat pinch-off conditionbeyond pinch-off voltagewell below pinch-off conditionfor any value of VDS
⇒ The refractive index of E layer at frequency of 81 N0∞10.5
⇒ When Pc is the unmodulated carrier power and Pt is the total power in the modulated wave, then the maximum power in AM wave isPt = 1.5 PcPt = 2.5 PcPt = 2Pt = 22 Pc
⇒ The function Y = A B C + AB C + A B C + A BC is to be realized using discrete gates. The inputs available are A, B, C. We need a total of8 gates6 gates10 gates5 gates
⇒ If f(t) = r (t - a), F(s) =e-as/s2a/(s + a)1/(s + a)e-as/s
⇒ Match the following:List I | List II | ||
---|---|---|---|
A. | Ratio of maximum energy stored to energy dissipated per cycle | 1. | Propagation constant |
B. | TEM mode is loss less medium | 2. | Cutoff frequency is zero |
C. | Ratio of frequency in radian to phase velocity of EM wave | 3. | Quality factor of cavity |
D. | TEM is the mode of lowest cutoff frequency | 4. | Cylindrical waveguide |
A-3, B-2, C-4, D-1
A-2, B-3, C-1, D-4
A-3, B-2, C-1, D-4
A-2, B-3, C-4, D-1
⇒ In 8086the registers SI and DI are used for string operationthe registers CS and DS are used for string operationthe registers SS and ES are used for string operationthe registers SI and SP are used for string operation
⇒ If an additional two diodes were used to connect the 1 kW load across a bridge rectifier circuits, utilizing the full secondary of the transformer, how much d.c. power could be delivered using a transformer with the rating of 105 VA?35 W60 W85 W100 W
⇒ Find the number of loop equation and number of possible trees for the given gr7, 20971527, 2621447.57648016, 823543
⇒ A line has standing waves with a voltage maximum of 35 mV and minimum of 17.5 mV VSWR is240.50.25
⇒ Assertion (A): A series RLC circuit resonates when excited by variable frequency source.Reason (R): Resonant frequency is geometric mean of half power frequencies.Both A and R are true and R is correct explanation of ABoth A and R are true and R is not the correct explanation of AA is true but R is falseA is false but R is true⇒ If INT = 50 and LOOT = 30, the result of assignment statement SAL = INT + LOOT is508085
⇒ Assertion (A): Water waves are longitudinal but EM waves are transverseReason (R): In an EM wave electric field, magnetic field and propagation are mutually perpendicular.Both A and R are correct and R is correct explanation of ABoth A and R are correct but R is not correct explanation of AA is correct but R is wrongA is wrong but R is correct⇒ The number of repeaters in a coaxial cable link depends onsystem bandwidthseparation of equalizersthe number of coaxial cables in the tubenone of the above
⇒ The internal structure of PL A is similar toRAMROMboth RAM and ROMneither RAM nor ROM
⇒ Assertion (A): FET is a unipolar device. Reason (R): BJT is bipolar device. Both A and R are true and R is correct explanation of ABoth A and R are true but R is not a correct explanation of AA is true but R is falseA is false but R is true⇒ Assertion (A): Conductors do not permit propagation of waves more than a short distance into the conductor at microwave frequencies.Reason (R): The relaxation time constant for conductors is much small than the period of centimetric EM wave.Both (A) and (R) are true and (R) is the correct explanation of (A)Both (A) and (R) are true but (R) is not the correct explanation of (A)(A) is true but (R) is false(A) is false but (R) is true⇒ Which of the following statement is correct?Decimal 9 is represented as 1011 in Excess-3 codeDecimal 9 is represented as 1001 is BCD codeDecimal 10 is represented as 1100 is Gray codeDecimal 10 is represented as 1001 in binary code
⇒ A 10 bit ADC with a full scale output voltage of 10.24 V is to be designed to have ± LSB/2 accuracy. If ADC is calibrated at 25°C, the maximum net temperature coefficient of ADC should not exceed± 200 μV/°C± 400 μV/°C± 600 μV/°C± 800 μV/°C
⇒ A full wave rectifier supplies a load of 1 kΩ. The a.c. Voltage applied to the diodes is 220 - 0 - 220 Volts rms. If diode resistance is neglected, then Average d.c. Voltage220 V200 V198 V0 volts
⇒ When the number of quantising levels is 16 in PCM, the number of pulses in a code group will be34816
⇒ An 8156 has A15 connected to its CE input. A14 to A8 are unconnected, and AD7 to AC0 are connected.Ignoring shadows, the port addresses80 H85 H82 H, 83 H80 H to 85 H
⇒ Conductivity σ, mobility μ and Hall coefficient KH are related asμ = σKHσ = μKHKH = μσKH =(μσ)1.1
⇒ If the characteristic equation of a closed loop system is s2 + 2s + 2, then the system is :over dampedcritically dampedunder dampedundamped