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A 300meterlong train passes a 450meterlong platform in 5 sec. If a man is walking at a speed of 4 m/sec along the track and the train is 100 m away from him, how much time will it take to reach the man?
Directions: Select the most appropriate word/phrase among the choices to complete the sentence.
You can make your quixotic experiments with someone else, I do not wish to be your ________.
Which of the following word is opposite to the word “connivance”?
If prices reduce by 20% and sales increase by 15%, what is the net effect on gross receipts?
Direction: Each statement has a blank followed by four options. Select the most appropriate word for the blank.
Guru was always able to maintain a _______ face when he said something silly, and that contrast made everyone laugh.
In a town, 48% people are educated, 51% people are young and 60% are servicemen. 24% are educated and young, 25% are young and servicemen, 27% are educated and servicemen and 5% have all the qualities. If the total number of persons in this town is 300, what is the ratio of those who have exactly two characteristics and those who have only one characteristic?
In the following question, two/three statements are given followed by four conclusions. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements:
Some cats are owls.
Some owls are elephant.
Conclusion:
Some cats are elephant.
All owls are elephant.
Directions: Read the given context and answer the question that follows.
Most Reality TV shows centre on two common motivators: fame and money. The shows transform waitresses, hairdressers, investment bankers, counsellors and teachers, to name a few, from obscure figures to household names. A lucky few successfully parlay their fifteen minutes of fame into celebrity. The luckiest stars of Reality TV also reap huge financial rewards for acts, including eating large insects, marrying someone they barely know, and revealing their innermost thoughts to millions of people.
Which of the following options best supports the above paragraph?
The sum of five consecutive integer is a and the sum of next five consecutive integer is b. Then, (ba)/100 is equal to
Directions: Insert the missing number.
f(x) = x, g(x) = 1/x ; by using Cauchy mean value theorem mean value for the function in [a,b] will be
The electric field of a uniform plane electromagnetic wave is:
The polarization of the wave is
If A^{2}  A + I = 0, then the inverse of A is
In the design of a single mode step index optical fibre close to upper cutoff, the singlemode operation is not preserved if
The value of the integral is equal to
For each of the positive edgetriggered JK flip flop used in the following figure, the propagation delay is ΔT
Which of the following waveforms correctly represents the output at Q_{1}?
Let G_{cc}(s) be a PD controller. If f(t) = sin 2t, the amplitude of the frequency component of y(t) due to f(t) is
In an ideal silicon junction diode:
τ_{n0 }= τ_{p0 }= 10^{−7} sec
D_{n }= 25cm^{2}/sec
D_{p }= 10cm^{2}/sec
Then the ratia of N_{d}/N_{2} so that 80% of current in depletion region is carried by electrons is
Consider a compensator defined as
Then, the maximum phase shift of the compensator is ____.
In the given circuit, the values of V_{1} and V_{2} respectively are
A communication channel with AWGN operating at a signal to noise ratio of SNR >> 1 and bandwidth B has capacity C_{1}. If the SNR is doubled keeping it constant, then the resulting capacity C_{2} is given by
A filter has filter response given by h(t) = (sin(0.25πt))/πt. An input signal x(t) is applied at the input. Determine which of the signal component would be visible at the output.
x(t) = cos(0.125πt) – 2sin(0.125πt) + 0.125sin(0.5πt)
cos(0.125πt)
sin(0.125πt)
sin(0.5πt)
The photo resist that is insoluble initially and becomes soluble after exposure to UV light is called
Refer the following figure to find the value of gain of the feedback circuit (feedback factor) and closed loop voltage gain respectively if R_{1}=1kΩ and R_{f} = 10kΩ.
Choose the correct match for input resistance of various amplifier configurations shown below.
A sailor goes 12 km downstream in 48 minutes and returns in 1 hour 20 minutes. The speed of the sailor in still water is:
A proportional plus derivative controller
Which of the above statements are correct?
A rectangular pulse of duration T is applied to a matched filter, output obtained out of this system would be most likely
If C is any closed path and U is a scalar function, then the value of contour integral ∮_{c}(∇U).dl is (Answer up to the nearest integer)
The electrical path of a lossless transmission line of length 50 cm which is operated at 25 MHz in air is ______
(Given, L = 10 μH/m, C = 40 pF/m)
If two semiconductor materials have exactly the same properties except that, material A has a band gap of 1.0 eV and material B has a band gap of 5.0 eV then, the ratio of the intrinsic concentration of material A to that of B will be ___ × 10^{33}
(Answer up to two decimal places)
Which one of the following is the correct perfect square (in base 10)?
Two halfwave dipole antennas placed as shown in the figure are excited with sinusoidally varying currents of frequency 3 MHz and phase shift of π/2 between them (the element at the origin leads in phase). If the maximum radiated Efield at the point P in the xy plane occurs at an azimuthal angle of 60°, the distance d (in metres) between the antennas is (Answer up to the nearest integer)
A circuit is designed with 2 JK FF’s. If the output Q_{A}Q_{B}=10 at starting, what will be the output Q_{A}Q_{B} after 13^{th} clock pulse will be
A transfer function G(s), with the degree of its numerator polynomial zero and the degree of its denominator polynomial as two, has a Nyquist plot shown in the figure. The transfer function represents
What will be the output Y, if the input number B_{3}B_{2}B_{1}B_{0} = 0101 as shown in the below digital circuit?
The diagonal clipping in Amplitude Demodulation (using envelope detector) can be avoided if RC timeconstant of the envelope detector satisfies which of the following conditions?
(Here, W is message bandwidth and ω_{c} is carrier frequency both in rad/sec)
The distance between two spacecrafts is 3000 km. Both of them has a paraboidal reflector antenna of 0.85m diameter which operates at a frequency of 2 GHz, with an aperture efficiency of 64 %. If the spacecraft A’s receiver requires 1 pW for a 20 dB signaltonoise ratio then what transmitted power (in Watts)is required on the spacecraft B to achieve this signaltonoise ratio ?
Consider the following statements:
A flipflop is used to store 1 bit of information.
Race around condition occurs in a JK flip flop when both of its inputs are 1.
Master slave configuration is used in flipflops to store 2 bits of information.
A transparent latch consists of Dtype flipflops.
Which of the above statements are correct?
A Silicon PN junction diode under reverse bias has depletion region of with 10 µm. The relative permittivity of Silicon, ε_{r} = 11.7 and the permittivity of free space ε_{0} = 8.85 × 10^{12} F/m. the depletion capacitance of the diode per square meter is
For the linear network shown below, VI characteristics are also given in the figure. The value of Norton equivalent current and resistance, respectively are
A message signal m(t) has been sent by imposing it on a carrier frequency c(t). There are two Modulations schemes under consideration, AM and FM. Peak Frequency deviation for FM is set to be 2 times that of bandwidth used in AM, whereas magnitude for spectral components at 10 MHz ± 4 kHz are same for both schemes. Given below are the signals. The modulations indices for AM and FM respectively under given constraints is m(t) = cos[(8π ∗ 10^{3})t],c (t) = 5 cos[(2π ∗ 10^{6})t]
[Values of Bessel function if required: J_{1}(2) = 0.577, J_{1}(4) = 0.066, J_{1}(8) = 0.235, J_{1}(16) = 0.094]
For the arrangement shown below, the frequency spectrum of output y(t) will be
Consider a signal x(t) = 8cos(4πt + π/4)
Its Autocorrelation and PSD would be
Consider the system shown in the figure below. The transfer function of the system will be
Two RC coupled amplifiers are connected to form a 2stage amplier. If the lower and upper cutoff frequencies of each individual amplifier respectively are 100 HZ and 20 kHZ, What these frequencies are for the 2stage amplifier?
Consider a twoport network as shown in the figure below.
The ABCDparameter matrix for this network is
Find the value of integral is.....
The open loop transfer function of a unity feedback control system is:
The phase margin for the system is ________ (in degrees). (Answer up to the nearest integer)
Consider the circuit given below
The Thevenin equivalents of the circuit V_{Th}, R_{Th} between the terminals A and B are respectively
A carrier signal A_{C} cosω_{C}t is frequency modulated using a message signal 3 cos 10^{3}πt. If the signaltonoise ratio at input and output of the receiver are found to be 20 dB and 40 dB respectively, then what will be the sensitivity (in kHz/V) of frequency modulator? (Answer up to two decimal places)
In the figure shown, all elements used are ideal. For time t < 0.="" />_{1} remained closed and S_{2} open. At t = 0, S_{1} is opened and S_{2} is closed. If the voltage V_{c2} across the capacitor C_{2} at t = 0 is zero, the voltage across the capacitor combination at t = 0^{+ }will be ______Volts.
If the transistor shown below is operating in the saturation region, the base current I_{B }is greater than ___ μA. (Answer up to the nearest integer)
A silicon bar is doped with 10^{17} arsenic atoms /cm^{3}. The equilibrium hole concentration at 300k and the location of the Fermi level (E_{F}) of sample relative to intrinsic Fermi level (E_{Fi}) are
(Given, n_{i} = 1.5 × 10^{10}/cm^{3} )
X is a binary memoryless source with probability, p(x = 0) = 0.3. If the source is transmitted over a BSC with crossover probability 0.1, then the capacity of the channel is
(Answer up to two decimal places)
The parameter of the transistor in figure. V_{TN} =1.2V , K_{n}= 0.5 mA/V^{2} and λ = 0.
The voltage V_{DS} is ________(V)
If the Laurent series expansion of f(z) = is valid in the region  z  > 2, then what will be the absolute value of coefficient of 1/z^{2} ? (Answer up to the nearest integer)
The open loop transfer function of a system is G(s)H(s) = the root locus wil intersect the imaginary axis at
Consider a signal x(t) defined as
x(t) = sinc (100 πt) + 2 sinc^{2} (150 πt)
What will be the Nyquist sampling rate (in Hz) for this signal?
(Answer up to the nearest integer)
The value of line integral along a path joining origin to the point (4,4,2)
The unitstep response of a unity feedback system with open loop transfer function G(s) = K/((s + 1)(s + 2)) is shown in the figure below. What is the value of K? (Answer up to the nearest integer)
The area of the region bounded by the curves y = x – 1 and y = 3  x is
In a 8bit SISO register, if 16bit data 1011 0101 0010 1010 is applied at the input, the simplified form of the expression Z = is
(Answer up to the nearest integer)
Given
dy/dx = x^{2} − y^{2}, y(0)
The value of y(0/1) using Rungekutta Second order method is (Take h = 0.1)
23 docs263 tests

23 docs263 tests
