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A invest 1/3 part of the capital for 1/6 of the time, B invest 1/4 part of the capital for 1/2 of the time and C invest rest of the capital for rest of the time. Out of a profit of Rs. 23000, B’s share is?
Pipe A can fill a tank three times as fast as pipe B. If together two pipes can fill the tank in 48 min, the slower pipe alone will be able to fill the tank in:
In the following question, out of the four alternatives, select the word opposite in meaning to the given word.
Gratuitous
Find the area bounded between parabola and the line y^{2} = x,y = 2.
The bar graph shows the number of employees working under the six different Departments (A, B, C, D, E, F) of a certain company. Study the diagram and answer the following questions.
If departments F and D are merged to create a new department G, then which department will have the least number of employees?
In the following question, a sentence is given with a blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Confusion prevails in madrasas in Uttar Pradesh over the distribution of free NCERT textbooks as the academic session ____________ from August.
A sum of Rs.400 amounts to Rs.480 in 4 years. What will it amount to if the rate of interest is increased by 2 % for the same time?
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.
P: The Information and Broadcasting Ministry plans to conduct an independent study to gauge the impact of government advertisements on people.
Q: The advertisements are carried on various platforms, including print and visual media.
R: The Directorate of Advertising and Visual Publicity (DAVP) is the nodal agency of the government for advertising on behalf of the various ministries.
S: The initiative comes ahead of the Lok Sabha election in 2019 for which the government is expected to reach out to the people and highlight the works done by it in the past 4 years.
In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select 'No error'.
The gold foil used liberal (1)/ in Thanjavur paintings serves (2)/ many objectives that makes the painting more attractive. (3)/ No error
A, B and C can do a job in 6 days, 12 days and 15 days respectively. C works till 1/8 of the work is completed and then leaves. Rest of the work is done by A and B together. Time taken to finish the remaining work by A & B together is how much?
Given a network with values of components depicted in the figure.
Find the sum of current through 5Ω and 4Ω resistor.
The number of possible distinct Boolean expression of 3 variables will be ___________.
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?
Consider the following sentences regarding a constant signal.
1) A constant signal is a periodic signal because it has no fundamental period.
2) A constant signal is an anti periodic signal because it never repeats itself.
List1 (pole location) with list2(shown constant amplitude with impulse response).
Select the correct answer using the codes given below.
In the root locus for open loop transfer function is the ‘break away/in points are located at
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 opamp configuration shown below has following transfer function The feedback resistance used has 1.5 MΩ , the value of capacitance will be ___________ µf.
A semiconductor sample at room temperature has 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}.
An LED is connected as shown in figure. It should glow when V_{1} is at logic ‘0’ state (0.2V). Calculate R( in Ω). (Assume in active state current as 15 mA)
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 _{gm}?
In the circuit shown below express the current I_{0} in terms of V_{i}
From the circuit given below, find out the operating region of the transistors T_{1} and T_{2}
(V_{TH} = 0.4)
In the circuit shown below, assume that the voltage drop across a forward biased diode is 0.7 V. The thermal voltage V_{1} = kT/q = 25 mV. The small signal input V_{i} = V_{p} cos(ωt) where V_{p} = 100 mV.
The bias current I_{DC} through the diodes is
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.
A three stage amplifier with identical stages with lower cutoff frequency per stage 'f_{1}' is given overall negative feedback. Depending on the overall gain, the system may oscillate at a low frequency f_{c} given by
Consider the differential equation 3y^{n}(x) + 27y(x) = 0 with initial conditions y(0) = 0 and y'(0) = 2000. The value of y at x = 1 is
Let z be a complex variable. For a counterclockwise integration around a unit circle C, centred at origin, the value of A is
In the given circuit, the equivalent impedance of the circuit between terminals AB is
The ROCs of different impulse responses are shown below. Which of the following impulse responses are stable?
The current mirror circuit acts as a _________.
The given signal is the sum of tworeal exponentials:
What will be the region of convergence (ROC) in this case?
In the circuit given below, if current through the resistance R is given by I = 1 + 5 cos 2t , then find the value of R.
A ‘dual slope integrating type’ A to D converter, converts analog voltage of 15 volt to (11001010)_{2}. If the clock frequency is 2 MHz, the total conversion time is _______ μsec.
The open loop transfer function of a unity negative feedback control system is given by
Find the value of K for the phase margin of the system to be 45^{0} is
Consider a binary channel shown below, the value of P(Y_{1}) and P(Y_{2}), if P(X_{1}) and P(X_{2}) are 0.3 and 0.7 respectively are
The random process Z(t) is defined as Z(t) = X +Y; where X and Y are independent random variables. X is uniformly distributed on (1, 1) and Y is uniformly distributed on (0, 1)
The auto correlation function of Z(t) is R_{z} (0) is
Consider the following program for an INTEL 8085 microprocessor
1) MVI A, 92 H
2) ORA A
3) JP PORT
4) XRI 66 H
5) PORT OUT F2 H
6) HLT
The content of output port F2 H after execution of the program is
Consider a GaAs sample at T = 300 K. Let the Hall effect device is fabricated with the following geometry: d = 0.01cm, W = 0.05 cm and L = 0.5 cm. The electrical parameters are : I_{x} = 2.5 mA, V_{x} = 2.2 V and Bz = 2.5 × 10^{2} tesla. The hall voltage is V_{H} = 4.5 mV. What will be the resistivity of the sample?
Consider an abrupt PN junction (at T = 300 K) shown in the figure. The depletion region width X_{n} on the Nside of the junction is 0.2 μm and the permittivity of silicon (ε_{si}) is 1.044 x 10^{12} F/cm At the junction, the approximate value of the peak electric field (in kV/cm) is _________.
Given an arrangement of memories
1) 8 kB ROM
2) 8 kB RAM – 1
3) 4 kB RAM 2
4) Free space of memory of 4 KB after ROM.
Then the value of chip select (active low) for RAM2 is ________?.
For an abrupt pn junction diode, the doping concentrations on pside is 9 × 10^{16} cm^{3} and an nside is 5 × 10^{16}/cm^{3}. The diode is in reverse bias operating mode with total depletion width of 4 μm. Then the depletion width on nside is __________ μm.
The input impedance of lossless λ/8 transmission line with other end short circuited is given by ______. (Assume characteristic impedance Zo = 50Ω)
For a certain number system (51/4)_{b} = (13)_{b} is true
Then b is:
Following system of equation has
4x + 5y + 9z = 4
2x + y + 3z = 2
X + 2y + 3z = 1
A 400W, 220V bulb is supplied with 110V; then the power consumed by the bulb will be____?
For the PNP transistor circuit, given R_{B} = 500kΩ, V_{CC} = 12 volt, I_{CBO} = 18 μA, β = 60. The value of I_{CQ} = ____ mA?
(Assume V_{BE} = 0.7 V)
A waveform of second derivative of a certain signal is shown below.
The Fourier transform of given signal f(t) is.
For the signal
The ratio of power content in 1st harmonics and 8th harmonics is
Let Q√γ be the BER of a BPSK system over an AWGN channel with twosided noise power spectral density N_{0}/2. The parameter γ is a function of bit energy and noise power spectral density.
A system with two independent and identical AWGN channels with noise power spectral density N_{0}/2 is shown in the figure. The BPSK demodulator receives the sum of outputs of both the channels.
If the BER of this system is Q b√_{γ}, then the value of b is _____________.
An LTI system with transfer function H(f) is to be obtained in such a manner that it can generate a random signal x(t) having autocorrelation function R_{x}(τ) = 3ɳe^{3τ}, by passing white noise n(t) having PSD S_{n}(f) = ɳ/2 watts/Hz. What would be the suitable transfer function H(f)?
A biliary symmetric channel (BSC) has a transition probability of 1/8. If the binary transmit symbol X is such that P(X = 0) = 9/10, then the probability of error for an optimum receiver will be
If an electric field is given as:
Determine the work (in nJ) that is to be done in moving a 3μC charge along this path if the path is located at P(0.3, 4, 0.6).
A 15 A source is operating at 100 MHz and feeds a Hertzian dipole of length 6mm situated at origin of space, determine electric field at P (4, 30^{0}, 90^{0})
In SSB modulation system, if signal (cos 30t) is modulated with a carrier signal of frequency 850 rad /sec, then the expression for the lower side band is
The divide by N counter is shown below. If initially Q_{0} = 0, Q_{1} = 1, Q_{2} = 0 the value of N is _______.
The logic function implemented by the circuit given below is
Consider following connection to the memory
The accessible range of address from memory is
A box contains 2 identical bags A and B . Bag A contains 2 Red and 5 Green balls. Bag B contains 2 Red and 6 Green Balls. A person draws a ball at random. If the drawn ball was Red what is the probability that it was from bag A?
An intrinsic semiconductor bar of Si is doped with donor type impurity to the extent of 1 atom per 10^{8} silicon atoms, then the resistivity of silicon crystal will be (atomic density of Si crystals =5 × 10^{22} atoms /cm^{3} and μ_{n} = 1300cm^{2}N − sec)
The system of equations x  4y + 7z = 12 , 3x + 8y  2z = 10, 26 z  8y = 6
(D^{2 }− 5D + 6)y = e^{x }cos x is a Partial differential equation whose solution is given by
y = C_{1}e^{2x }+ C_{2}e^{3x }− Ke^{x}(3sin2x + cos2x)
The value of K is
Evaluate using Simpson’s ⅓ rd rule. Using h = 0.5
In a certain animal husbandry weight of animals had a distribution as shown in table below:
Mean weight of animals in the husbandry is______.
24 docs263 tests

Practice Test: Electronics Engineering (ECE) 15 Test  65 ques 
24 docs263 tests

Practice Test: Electronics Engineering (ECE) 15 Test  65 ques 