Practice Test: Electronics Engineering (ECE)- 11 - Electronics and Communication Engineering (ECE)
65 Questions MCQ Test GATE ECE (Electronics) 2024 Mock Test Series - Practice Test: Electronics Engineering (ECE)- 11
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Statement: All bags are cakes. All lamps are cakes.
Conclusions:
I. Some lamps are bags.
II. No lamp is bag.
Deduce which of the above conclusion logically follows statements:
Conclusions:
I. Some lamps are bags.
II. No lamp is bag.
Deduce which of the above conclusion logically follows statements:
Man does not live by __________ alone.
Extreme focus on syllabus and studying for tests has become such a dominant concern of Indian students that they close their minds to anything ___________ to the requirements of the exam.
Select the pair that best expresses a relationship similar to that expressed in the pair:
LIGHT : BLIND
= log(a + b), then:In an exam, the average was found to be 50 marks. After deducting computational errors the marks of the 100 candidates had to be changed from 90 to 60 each and average came down to 45 marks. Total number of candidates who took the exam was:
A solid 4cm cube of wood is coated with red paint on all the six sides. Then the cube is cut into smaller 1cm cubes. How many of these 1cm cubes have no colour on any side?
One of the warmest winters on record has put consumers in the mood to spend money.Spending is to be the strongest in thirteen years. During the month of February, sales of existing single family homes hit an annual record rate of 4.75 million. This paragraph best supports the statement that:
The age of father is 4 times more than the age of his son Amit. After 8 years, he would be 3 times older than Amit. After further 8 years, how many times will he be older than Amit?
Pipe A, B and C are kept open and together fill a tank in t minutes. Pipe A is kept open throughout, pipe B is kept open for the first 10 minutes and then closed. Two minutes after pipe B is closed, pipe C is opened and is kept open till the tank is full. Each pipe fills an equal share of the tank. Furthermore, it is known that if pipe A and B are kept open continuously, the tank would be filled completely in t minutes. Find t.
The Thevenin's equivalent resistance to the left of AB in figure given below is given by:
What is the time period of the sinusoidal signal
x(n) = 10 cos(0.4
n)
KIn a radar system, the range of R1 is achieved at a frequency f1. Then the range R2 at frequency R2 = 8f1 would be __________ [Neglect effect of 1 on the Beam width.]
Gate function is defined as ______________
A signal m(t) = 5 cos(2π100t) is frequency modulated a carrier. The resulting FM signal is:
The approximate bandwidth of the FM signal would be:
A system has a receiver noise resistance of 
It connected to an antenna with an input resistance of 
The noise figure of the system is:
is the equivalent receiver noise resistance & 
is the resistance of antenna So, F = 1+ 
=2A phase lead compensating network has its transfer function 
The maximum phase lead occurs at a frequency of:
The time taken for the output to settle within 2% of step input for the control system represented by 
is given by:
If diameter of a circular cross-sectional antenna is 2m, and it is transmitted a signal at frequency 100MHz, determine the minimum distance for far field approximation.
A load impedance 
is to be matched to a 
lossless transmission line by using a quarter wave line transformer. The characteristics impedance of the quarter wave transformer.
What is the velocity of a plane wave in a lossless medium having a relative permittivity of 5 and relative permeability of unity?
A dipole antenna of
/2 length has an equivalent total loss resistance is 0.5
. The efficiency of antenna is:
antenna,
If an electrical system is compared to a fluid system, the electrical current corresponds to the:
For the circuit shown below, the collector to emitter voltage is:
A power supply has a full load voltage of 24V. What is its no-load voltage for 5% regulation?
Two 100 W, 220 V bulbs are required to be connected across a 400 volts supply. The value of resistance to be inserted in the line so that the voltage across the bulbs does not exceed 220 V is:
For a given op-amp, CMMR = 105 and differential gain Ad = 105. The common-mode gain of the op-amp is:
The system of linear equations:
3x + 4y = 6
2x + 3y = 5
has:
Which of the following is a solution to the differential equation 
?
The value of the integral 
dz is: (where C is the circle z = 1)
A fair dice is tossed two times. The probability that the second results in a value that is higher than the first toss is:
where P is a vector is equal to:
A certain multiplexer can switch one of 32 data inputs to its output. The number of control inputs in this multiplexer:
The initial of MOD-16 down counter is 0110. After 37 clock pulses, the state of the counter will be:
12 MHz clock frequency is applied to a cascaded counter of modulus-3 counter, modulus-4 counter, and modulus-5 counter. Determine the output frequency.
The value of Z22 (Ω) for the circuit shown below is:
An ac voltage of 220 V is applied to a pure inductance of 50 H. If the current is 5 A, the instantaneous value of voltage and current will be respectively given by:
For the circuit shown below, a resistance R is to be connected across an active network, it is given that when
(i) R = infinity, V = 5 volts
(ii) R = 0, current output of the active source is 2.5 A.
What would be the current when the value of R is 5 Ω?
The output y(t) of a continuous – time system S for the input x(t) is given by
Which one of the following is correct?
What is the output of the system with 
in response to the input 
?
The 3-dB bandwidth of the low-pass filter having impulse response is 
is:
What is the inverse fourier transform of u(w)?
The signal flow graph shown below has M number of forward path and N number of individual loops.
Q. What are the values of M and N ?
The transfer functions of the sytem is given by 
The impulse response of the system is:
Determine the value of K for a unity feedback system with 
to have a peak overshoot of 50%.
Assuming an operating temperature T = 300K and 
=26 mV. What is the change in semi-conductor silicon diode forward voltage 
to produce a 10:1 change in dioide current 
while operating in the forward bias region (<25mA)?
An n-type semiconductor is illuminated by a steady flux of photons with energy greater than band gap energy. The change in conductivity obey which relation?
A single-phase full-bridge diode rectifier delivers a load current of 10 A, which is ripple free. The rms and average values of diode currents are respectively:
What is the value of inductance to be used in the inductor filter connected to a full-wave rectifier operation at 60 Hz to provide a DC output with 4% ripple for a 100 Ω load?
For the circuit shown below, the output voltage is given by
An amplifier using BJT has two identical stages each having a lower cut-off (3dB) frequency of 64Hz due to coupling capacitor. The emitter bypass capacitor also provides a lower cut-off (3dB) frequency due to emitter degeneration alone of 64Hz. The lower 3dB frequency of the overall amplifier is nearly?
What is the value of 
where 
Here, s is the surface bounded by x = 0, x = 1, y = 0, y = 1, z = 0, z =1 and 
are unit vectors along x, yand z axes respectively.
For sea water with 
= 5 mho/m and 
= 80, what is the distance for which radio signal can be transmitted with 90% attenuation at 25 KHz?
hence sea water is a acting as a good conductor Since attenuation is 90%, so transmission is 10%
A lossless transmission line with 
= 50 
and 
= 1.5m connects a voltage source 
to a load 
If 
= 60V and 
= 50 
then determine the current I supplied by the source at a frequency 100 MHz.
A pulse train with a frequency of 1MHz is counted using a mod-1024 ripple counter built with J–K flip-flops. For proper operation of the counter the maximum permissible propagation delay per flip-flop stage is:
of counter
In a binary adder with two inputs X and Y, the correct set of logical expression for the output S (sum) and C (carry) are respectively:
and carry output is C= XYConsider the following statements:
1. When a MUX is used to implement a logic function, the logic variables are applied to the MUX’s data inputs.
2. The circuit for a DEMUX is basically the same as that for a decoder.
Of these:
A liner system has the transfer function 
When it is subjected to an input white noise process with a constant spectral density A, the spectral density of the output will be:
A 3 x 8 decoder with two enable inputs is to be used to address 8 blocks of memory. What will be the size of each memory block when addressed from a sixteen bit bus with two MSBs used to enable the decoder?
Four signals 
are to be multiplexed and transmitted. 
and 
have a bandwidth of 4 KHz, and remaining two signals have bandwidth of 8KHz. Each sample requires 8 bits for encoding. What is the minimum transmission bit rate of the system?
A telephone channel has bandwidth B of 3KHz and SNR of 30dB. It is connected to a telephone machine having 32 different symbols. The symbol rate required for errorless transmission is nearly:
A modem is classified as low speed if data rate handled is:
The divergence of the vector field
A solution for the differential equation 
with initial condition 
=0 is:
For the transistor circuit shown below, the Q-point values are given as ICQ = 1 mA and VCEQ = 6V
If VBE (on) = 0.7 V, the values of the RB and Rc will be respectively:
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22 docs|263 tests
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22 docs|263 tests
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