ESE 2021 Technical Quiz || Full Revision Mock Test-1
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The gain margin and the phase margin of a feedback system with are
The discrete time Fourier transform (DTFT) of is equal to
Which of the following instrument have linear scale
In N silicon semiconductor, hole density decreases from 1014 cm-3 - 1013 cm-3 from x = 0 and x = mm. What will be the hole diffusion current density if ?
A steel bar magnet has a magnetic moment of 2.5 A-m2 and a mass of kg. If the density of steel is kg/m3, the intensity of magnetization is
Which one of the following is one byte instruction?
How many 32K × 1 RAM chips are needed to provide a memory capacity of 256 K bytes?
Poynting vector has the unit
Consider the z-transform X(z) = 5z2 + 4z-1 + 3; 0<|z| < ∞ . The inverse z-transform x[n] is
For a random variable x having the PDF shown in the figure given below the mean and the variance are, respectively
A parallel plate waveguide is to be designed so that only TEM modes can propagate in the frequency range 0 < f < 2 GHz. The dielectric material between the plates has ϵr= 9, μr = 1. The spacing ‘d’ allowed between the parallel plates of waveguide is
TCP protects itself from miss delivery by IP with the help of-
The function of the following circuit, if the input is a sine wave, is that it
Statement (1): For causality of an LTI system for
Statement (2): For stability in the S-plane, ROC must include imaginary axis.
A message consisting of 2400 bits is to be passed over an internet. The message is passed to the transport layer which appends a 150-bit header, followed by the network layer which uses a 120-bit header. Network layer packets are transmitted via two networks, each of which uses a 26-bit header. The destination network only accepts up to 900 bits long. The number of bits, including headers delivered to the destination network, is
TCP is preferred over UDP because it provides
1) Fastest communication
2) Connection oriented service
3) Reliable service
Which of the statement is correct?
The covariance matrix of three random variables x1, x2 and x3 is
A linear transformation y = Ax is made where
The obtained covariance matrix of y is
If μ11 = 2 then value of is______
A digit voltmeter has an accuracy specification of ± 0.5% of reading ± one digit. What is the possible error in volts when the instrument displays 2.00V on the 10 V scale?
The cells are connected in two rows in parallel to pass a current of 6A through an external resistance 0.7 Ω. If the electromotive force of each cell is 2.1 volts and internal resistance 0.5Ω, the minimum number of cells will be
Which of the following instructions can be used to complement the higher significant nibble of the accumulator in an 8085 microprocessor?