Which one of the following is used as the interface chip for data transmission betweenand a 16-bit ADC?
Which of the following photodetector does not provide gain?
The characteristic equation of a control system is given as s4 + 4s3 + 4s2 + 3s + K = 0.What is the value of K for which this system is marginally stable?
A Hartley oscillator uses FET with gm of 2 ms and rd = 2 KΩ. The total coil inductance isμH with turns ratio of input to output side of 1 :It is tuned with apf capacitor. Find frequency of oscillations, amplifier gain margin in dB.
A transmitted using AM has in modulated carrier output power ofKW and can be modulated to a maximum depth ofby a sinusoidal modulating voltage without causing overloading. Find the value to which an modulated carrier power can be increased without resulting in overloading if the maximum permitted modulating index is 40%
Abit type ADC uses 1 MHz clock its maximum conversion time is __________ .
Consider the program segment written forbased system:LXI S, FFFFHMVI A, 00HMVI B, 0FHSUB BCNC GOLOCMVI A, FFH where in the program subroutine labelled ''GOLOC'' introduces delay ofT-states only. How many T-states are required to execute above program statement?
If a signal f(t/has energy is E/n then energy of the signal f(nt) is equal to __________ (n is constant)
In a certain network not containing any dependent sources, number of nodes = 4 and number of branches is equal to 6.
AMHz plane EM wave is propagating in free space. The wave is incident normally on an infinite copper slap. The antenuation constant for the wave is (σcopper = 5.8 x 107 mho/ m)
The effective modulation index is:
The surface charge density on a conductor is 1.x 10-9C/m2. The conductor is immersed in water with ε = 78ε0.The electric field will be __________ .
The question below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.Unemployed: Worker
The following statements are true with respect to "Cascode Amplifier".
The system of linear equations+= 1 ,+ y = 6 has
The depth of penetration at 4 MHz iscm, then at 2.5 MHz it is
Transmitted voltage level is:
Hari (H), Gita (G), Irfan (I) and Saira (S) are sibiligs (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:(i) Hari's age + Gita's age > Irfan's age + Saira's age.(ii) The age difference between Gita and Saira is 1 year. However, Gita is not the oldest and Saira is not the youngest.(iii) There are not twins.In what order were they born (Oldest first)?
An FM transmitter deliversto a load ofW when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given output.J0(= J0(= J0(3.= - 0.J0(5.1)= - 0.1J1(= 0. J1((3.= J1(5.= - 0.J2(2.= 0.1J2(3.8)= 0. J2(5.= 0Power in the first order sidebands is :
A 4 cm by 3 cm rectangular waveguide with air cavity, is operating atGHz with TE11 mode. The cut-off frequency is:
A switch tail ring counter is made by using a single D FF. The resulting circuit is a
For a bipolar transistor, avalanche multiplication factor depends on __________ .
A conductor in x-y plane and having length 1 m is moving with a velocity V = (2i + 3j + k) m/sec. A magnetic induction field B = (i + 2j) Wb/m2 is applied to the conductor. The potential difference between the ends of the conductor is
A delta modulation system is designed to operate at 3 times the Nyquist rate for a signal with a 3 KHz bandwidth. The quantization step size ismv. The maximum amplitude of a 1 KHz input sinusoidal for which the delta modulator does not show slope overload is :
In analog signal given below is sampled at such a rate that the samples of signal can be given to a collection of buffers having capacity of eithersamples/sec. orsamples/sec. The sampling rate is minimum such that it fully utilizes the collection of both types of buffers m(t) = 2 sin 480pt + 3 sinpt The folding (maximum) frequency is
Which of the following may result in instability problem?
The Boolean expression B⊕E is a simplified version of expression ABE + BCDE+ BC D E + A B D E + B C D E + A B D E then which of the following choice is correct?
A source produces 4 symbols with probabilities , , , For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is
A periodic voltage has following values for equal time intervals changing suddenly from one value to next :--etc.What would be the RMS value of a sine wave having the same peak value as that of the above mentioned periodic wave?
The number of variables in a function is odd and the number of minterms with even number of 0's are same as the number of minterms with odd number at 1's, the expression formed can be represented in __________ as well as __________ form.
The value of the integral of the function g(x, y) = 4x3 + 10y4 along the straight line segment from the point (to the point (in the x-y plane is
To realize following function 'f', How many minimum number of 2 input NAND gates are required?
Inmicroprocessor system, can an input and output port have same port address?
A control system is as shown in given figure The maximum value of gain K for which the system is stable is
AkHz carrier wave modulatedatHz is applied to a resonant circuit tuned to a carrier frequency and having Q =What is the degree of modulation after passing the wave through this circuit?
In the circuit s closed for a long time and steady state is reached. s is opened at t = 0+ Determine current through resistor.
A lossless transmission line with air dielectric is 6 m long. What is the line length atMHz?
Consider a Binary Symmetric Channel (BSC) with probability of error being p. To transmit a bit, saywe transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits areThe probability that the transmitted bit will be received in error is
The probability density function of a random variable x is as shown. The mean of the distribution is:
For a Gaussian process, auto-correlation also implies
A short vertical grounded antenna is required to radiate at 1 MHz. The effective height of the antenna is 302 m. The calculated value of radiation resistance is
In a synchro error detector, the output voltage is proportional to [ω(t)]n, where ω(t) is the rotor velocity and n equals :
In a number system with radix r, the decimal value ofis equal to 4r. The decimal values ofand r respective are equal to
5 skilled workers can build a wall indays; 8 semi-skilled worker can build a wall in 25days;unskilled workers can build a wall indays, If a team has 2 killed, 6 semi-skilled and 5 unskilled workers, how long will it take to build the wall?
In the following transistor circuit VBE =7 V, rc = 25mV/IE, and β and the capacitance are very largeThe mid-band voltage gain of the amplifier is approximately
The analog signal given below is sampled bysamples per secondm(t) = 2 sin 480pt + 3 sin 720ptThe folding (maximum) frequency is __________ .
The eigen values of a skew symmetric matrix are
Consider an angle modulated signalx(t) = 6cos[2p x 106t + 2sin(8000pt) + 4cos(8000pt)] VThe average power of x(t) is
Find the electric charge required on the earth and moon to balance their gravitational attraction if the charge on the earth istimes that on the moon.
independent low pass signals of bandwidth W, 2W, 3W, W, 2W, 3W, W, 2W,Hz are to be time division multiplexer on a common channel using PAM. To achieve this, the minimum transmission capacity of the channel should be __________ .