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A vendor sells his articles at a certain profit percentage. If he sells his articles at 1/4^{th} of his actual selling price then he incurs a loss of 60%. What is his actual profit percentage?
Directions: In the following question, a set of three figures X, Y and Z shows a sequence in which a piece of paper is folded and finally cut from one or more sections. Below these figures, a set of answer figures marked (a), (b), (c) and (d) shows the design which the paper actually acquires when it is unfolded. You have to select the answer figure which most closely resembles the unfolded piece of paper.
Criteria for selecting candidate for internship programme
The candidate:
can preferably start the internship between 18th Oct'17 and 17th Nov'17
are preferably available for duration of 6 months
have computer skills and interest in designing
have already graduated or are currently in any year of study
knows how to deal with customers Nick is a high school student and wants to do an internship as his summer project. He is a very vibrant boy and goes well with people.
Is he the right candidate for the internship?
In a certain code, BRAIN is written as *%#× and TIER is written as $#+%. How is RENT written in that code?
Which of the following is MOST OPPOSITE in meaning to Locus?
Directions: The table lists the size of building lots in the Orange Grove subdivision and the people who are planning to build on those lots. For each lot, installation of utilities costs $12,516. The city charges impact fees of $3,879 per lot. There are also development fees of 16.15 cents per square foot of land.
How much land does Mr. Taylor own in the Orange Grove subdivision?
The Union Sports Ministry has approved five lakh rupees from the National Welfare Fund for Sportspersons for Kaur Singh who is suffering from heart disease. Kaur Singh is associated with which of the following sports?
Two positions of a dice are given. Which of the following numbers would be at the top when 2 is at the bottom?
Direction: In given question below there are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows from the given statements disregarding commonly known facts.
Statements:
All oils are sands
Some clays are oils
All clays are rocks
Conclusions:
Walking at th of his usual speed, a man reaches his destination two minutes early. What is the time taken by him to cover the same distance at his usual speed?
Given a network with values of components depicted in the figure.
Find the sum of current through 5Ω and 4Ω resistor.
Which of the following is correct?
Given the following system
T{X[n]} = X[n] + 3u[n+1]
Where u[x] represents unit step functions
Which of the following is a correct representation of the system?
The width of the depletion layer is proportional to
List1 (pole location) with list2(shown constant amplitude with impulse response).
Select the correct answer using the codes given below.
For the latch circuit shown below, which of the following options is correct?
In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor
The far field of an antenna varies with distance r as
A semiconductor sample at room temperature has an intrinsic concentration of 2.5 X 10^{17} /m^{3}. After doping what will be the minority carrier concentration if the majority carrier concentration is given as 5.5 X 10^{21} /m^{3}.
If the block diagram shown in figure 'A' and figure 'B' are equivalent, then x in figure 'B' will be equal to
For an ideal pchannel MOSFET, μ_{p}= 300cm^{2}/vs, W = 15μm, L = 1.5μm, t_{ox} = 300A, V_{t} = 0.7V. If the transistor is nonsaturation region at V_{SD}=0.5V, then what is the Transconductance g_{m}?
Which of the following is/are sdomain equivalent of the circuit shown below?
From the circuit given below, find out the operating region of the transistors T1 and T2
(V_{TH }= 0.4)
Consider the following CT systems with an input x(t) and output y(t).
System P : y(t) = dx(t)/dt
System Q : y(t) = e^{x(t)}
System R : y(t) = 3x(t)
System S : y(t) = 3x(t) + 5
Which of the above system is/are linear?
A communication channel having AWGN characteristics is operating in such a way that SNR >> 1. The bandwidth of signal being transmitted is B and capacity C_{1}. Determine the capacity of channel if a signal with half the bandwidth is transmitted through the same channel with same quality.
In the following scheme, if the spectrum M(f) of m(t) is as shown, then the spectrum Y(f) of y(t) will be
An amplifier operating over the frequency range of 18 to 20 MHz has a 10kΩ input resistance.The RMS noise voltage at the input to the amplifier at ambient temperature is (assume Boltzman’s constant = 1.38 × 10^{−}^{23}J/K)
Consider two functions x = ψ ln Φ and y =Φ In ψ . Which of the following is the correct expression for ∂ψ/∂x ?
What is the maximum torque (in Nm) on a square loop of 200 turns in a field of uniform flux density of 1 Wb/m^{2}. The loop has 15cm side and carries a current of 5A.
The sampling rate for Compact Discs (CDs) is 44,000 samples/s. If the samples are quantized to 256 levels and binary coded, the corresponding bit rate (in bits per second) is ______.(Answer up to the nearest integer)
The maximum number of Boolean expression that can be formed for the function f(x,y,z) satisfying the relation f(x¯,y,z¯) = f(x,y,z) is
The voltage across and current through a circuit element are, respectively given as,
v(t) = 60 cos(100t + 40°) V
i(t) = 15 cos(100t − 20°) A
The power (in W) absorbed by the element is
(Answer up to the nearest integer)
If w = z/(z−i/3)and w = 1, then z lies on
where w and z are complex numbers
Two 5bit binary numbers, i.e. X = 01110 and Y = 11001 are represented in two's complement format. The sum of X and Y represented in two's complement format using 6 bits is
(Answer up to the nearest integer)
In a broadcast super heterodyne receiver the quality factor of antenna coupling circuit is 150, if the intermediate frequency is 455 KHz, then the image rejection ratio at 20 MHz is.
The singular solution of the differential equation y = px + p^{3}, (p = dy/dx) is
A 700 mW maximum power dissipation diode at 25 °C has 5 mW/oC derating factor. If the forward voltage drop remains constant at 0.7 V, the maximum forward current at 65 °C is
Match 'List I' with 'List II' and choose the correct option.
What is the image rejection ratio when a super heterodyne receiver with quality factor of 50 is tuned with f_{s} = 800 KHz and local oscillator frequency is 1250 KHz.
Consider the following statements:
Both ferromagnetic and ferrimagnetic materials have domain structures; each domain has randomly oriented magnetic moments when no external field is applied.
Both ferromagnetic and ferrimagnetic materials make those domains that have favourable orientation to the applied field grow in size.
The net magnetic moment in ferromagnetic material is higher than that in ferrimagnetic material.
The net magnetic moment in ferrimagnetic material is higher than that in ferromagnetic material.
Which of the above statements are correct?
A sinusoidal oscillator is built using an amplifier of real gain A, infinite input impedance and the feedback(β) network as shown in the figure.
If Z = jX then Z_{0} is equal to
Match the following and choose the correct option.
Two 4ray signal constellations are shoen. It is given that ϕ_{1}and ϕ_{2}constitute an orthonormal basis for the two constellations. Assume that the four symbols in both the constellations are equiprobable. Let N_{0}/2 denote the power spectral density of white Gaussian noise.
The ratio of the average energy of Constellation 1 to the average energy of Constellation 2 is:
Two independent random voltage processes x_{1}(t) and x_{2}(t) are applied to an RC network as shown below. If the spectral power density of the two processes are respectively,
then, the output power spectral density will be
In synchronous TDM, there are four inputs and data rate of each input connection is 3 kbps. If 1 bit at a time is multiplexed, what is the duration of each frame?
The feedback control system represented by the open loop transfer function G(s) H(s) = is
Silicon is doped with boron to a concentration of 4 × 10^{17} atoms/cm^{3}. Assuming the intrinsic carrier concentration of silicon to be 1.5×10^{10}/cm^{3} and the value of kT/q to be 25 mV at 300 K
Compared to undoped silicon, the Fermi level of doped silicon?
A causal and stable LTI system has the property that
The difference equation for this system relating any input x[n] and the corresponding output y[n] is
Consider the following synchronous counter made up of JK, D and T flipflops.
Find the modulus value of the counter.
A phase controlled single phase rectifier, supplied by an AC source, feeds power to an RLE load as shown in the figure. The rectifier output voltage has an average value given by ,where V_{m} = 80π volts and α is the firing angle. If the power delivered to the lossless battery is 1600W, α in degree is ________.(Answer up to the nearest integer)
Following the state diagram shown clocked sequential circuit:
How many states the sequential circuit has?
Consider the following 8085 microprocessor program.
LDA 4200 H
CMA
ADI 01 H
STA 4300 H
HLT
If the memory content of 4200 H is 77 H, then the memory content of 4300 H will be H.
(Answer up to the nearest integer)
Find by double integration the volume of the solid generated by revolving the ellipse
x^{2}/a^{2} + y^{2}/b^{2} = 1 about the xaxis.
Consider the amplitude modulated (AM) signal A_{c} cos ω_{c}t + 2 cosω_{m} t cosω_{c}t . For demodulating the signal using envelope detector, the minimum value of A_{c} should be
(Answer up to the nearest integer)
Consider the following differential equation dy/dx = −x+1
If y (2) = 1 then the value of y (2.2) using Runge Kutta third order method is
The equivalent inductance of the circuit shown in the figure is equal to ___ H. (Answer up to the nearest integer)
Consider the two port network shown below
If V_{o}(s)/V_{1}(s) = s^{3}/(s^{3} + 6s + 12s + 24) then C_{2} is _______ F.
In the circuit shown below, the emitter current is 26 μA. What will be the value of input impedance (in kΩ )? (Answer up to one decimal place)
For the opamp biasing shown in figure, it was found experimentally even at zero bias the current flowing into positive terminal is 15nA and current flowing into negative terminal is 10nA. If the output voltage of opamp is 8mV. The value of feedback resistance R_{f }is__________.
Assume (R_{f}≫ R). R = 0.5 kΩ
A buck converter that feeds a variable resistive load is shown in the figure. The switching frequency of the switch S is 100 kHz and the duty ratio is 0.6. The output voltage V_{0 }is 36 V. Assume that all the components are ideal and the output voltage is ripplefree. The value of R (in Ohm) that will make the inductor current (i_{L}) just continuous is (Answer up to the nearest integer)
The Fourier transform of continuous time signal X(t) = 3cos(10t) + 4sin(10t) is
Consider the circuit shown in the figure below. The voltage V across the load is measured by taking three different values of load (Z_{L}) and given in the table below.
The magnitude of Thevenin voltage (in V) for the circuit shown in the box is equal to _____. (Answer up to one decimal place)
Find the systems response to the input x[n] = u[n] if the unit impulse response h[n] of a DT LTI system is h[n] = ?
For a JFET, the following readings were obtained experimentally:
What is the amplification factor (α) of the JFET?
(Answer up to the nearest integer)
Find the capacitor voltage VC at t = 1msec if switch is closed as t = 0. Assume capacitor initially uncharged and opamp is not saturated.
23 docs263 tests

23 docs263 tests
