Electronics and Communication Engineering (ECE)
Consider the following statements regarding the properties of transfer function:
1. The transfer function is independent of the input of the system.
2. The transfer function is defined for linear time- variant system.
3. The transfer function of a continuous-data system is expressed only as a function of the complex variable s.
4. All the initial conditions are not necessarily set to zero for finding the transfer function of a given system.Q. Which of the above statements is/are not true?- a)1, 3 and 4 only
- b)2, 3 and 4 only
- c)1 and 3 only
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements regarding the properties of transfer function:
1. The transfer function is independent of the input of the system.
2. The transfer function is defined for linear time- variant system.
3. The transfer function of a continuous-data system is expressed only as a function of the complex variable s.
4. All the initial conditions are not necessarily set to zero for finding the transfer function of a given system.
1. The transfer function is independent of the input of the system.
2. The transfer function is defined for linear time- variant system.
3. The transfer function of a continuous-data system is expressed only as a function of the complex variable s.
4. All the initial conditions are not necessarily set to zero for finding the transfer function of a given system.
Q. Which of the above statements is/are not true?
a)
1, 3 and 4 only
b)
2, 3 and 4 only
c)
1 and 3 only
d)
All of the above
Lakshmi Priya Ghildiyal answered • 11 hours agoCorrect Answer :- D
Explanation : The properties of transfer function are given below:
1) The ratio of Laplace transform of output to Laplace transform of input assuming all initial conditions to be zero.
2) The transfer function of a system is the Laplace transform of its impulse response under assumption of zero initial conditions.
3) Replacing ‘s’ variable with linear operation D = d/dt in transfer function of a system, the differential equation of the system can be obtained.
4) The transfer function of a system does not depend on the inputs to the system.
5) The system poles and zeros can be determined from its transfer function.
Ratnesh Kumar asked • 4 hours agoThe maximum electric field in reverse-biased silicon pn junction is Emax = 3 x 105 V /cm. The doping concentration are Nd = 4 x1016 cm-3 and Na = 4 x 1017 cm-3. The magnitude of the reverse bias voltage is- a)3.6 V
- b)9.8 V
- c)7.2 V
- d)12.3 V
Correct answer is option 'C'. Can you explain this answer?
The maximum electric field in reverse-biased silicon pn junction is Emax = 3 x 105 V /cm. The doping concentration are Nd = 4 x1016 cm-3 and Na = 4 x 1017 cm-3. The magnitude of the reverse bias voltage is
a)
3.6 V
b)
9.8 V
c)
7.2 V
d)
12.3 V
Anumala Krishna Vamsi asked • 10 hours agoA binary symmetric channel (BSC) has a transition probability of 1/8. If the
binary symbol X is such that P(X = 0) = 9/10, then the probability of error for
an optimum receiver will be Correct answer will be uploaded soon - a)a
- b)b
- c)c
- d)d
Correct answer is option 'A'. Can you explain this answer?
A binary symmetric channel (BSC) has a transition probability of 1/8. If the
binary symbol X is such that P(X = 0) = 9/10, then the probability of error for
an optimum receiver will be
binary symbol X is such that P(X = 0) = 9/10, then the probability of error for
an optimum receiver will be
Correct answer will be uploaded soon
a)
a
b)
b
c)
c
d)
d
Kesava Surendra asked • 11 hours agoA set of linear equations is represented by the matrix equation Ax = b. The necessary condition for the existence of a solution for this system is- a)A must be invertible
- b)b must be linearly depended on the columns of A
- c)b must be linearly independent of the columns of A
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
A set of linear equations is represented by the matrix equation Ax = b. The necessary condition for the existence of a solution for this system is
a)
A must be invertible
b)
b must be linearly depended on the columns of A
c)
b must be linearly independent of the columns of A
d)
None of these
Parvez M Sani Sani asked • yesterdayArrange in ascending order of cut offfrequency (fc) of the waveguides in the following modes as- a)TE10 < TE20 < TE01 < TM11
- b)TE10 < TEo1 < TE20 < TM11
- c)TE 11 < TE01 < TE20 < TM 10
- d)TE01 < TE10 < TE20 < TM11
Correct answer is option 'A'. Can you explain this answer?
Arrange in ascending order of cut off
frequency (fc) of the waveguides in the following modes as
a)
TE10 < TE20 < TE01 < TM11
b)
TE10 < TEo1 < TE20 < TM11
c)
TE 11 < TE01 < TE20 < TM 10
d)
TE01 < TE10 < TE20 < TM11
Qurat Ul Ain asked • yesterdayWhich one of the following is a property of the solutions to the Laplace equation : 
- a)The solution have neither maxima nor minima anywhere except at the boundaries
- b)The solution are not separable in the coordinates
- c)The solution are not continuous
- d)The solution are not dependent on the boundary conditions
Correct answer is option 'A'. Can you explain this answer?
Which one of the following is a property of the solutions to the Laplace equation :
a)
The solution have neither maxima nor minima anywhere except at the boundaries
b)
The solution are not separable in the coordinates
c)
The solution are not continuous
d)
The solution are not dependent on the boundary conditions
Padmaja Pothala asked • yesterdayThe pole-zero diagram of a causal and stable discrete-time system is shown in the figure. The
zero at the origin has multiplicity 4. The impulse response of the system is h[n]. If h[0] = 1,
we can conclude
- a)h[n] is real for all n
- b)h[n] is purely imaginary for all n
- c)h[n] is real for only even n
- d)h[n] is purely imaginary for only odd n
Correct answer is option 'C'. Can you explain this answer?
The pole-zero diagram of a causal and stable discrete-time system is shown in the figure. The
zero at the origin has multiplicity 4. The impulse response of the system is h[n]. If h[0] = 1,
we can conclude
zero at the origin has multiplicity 4. The impulse response of the system is h[n]. If h[0] = 1,
we can conclude
a)
h[n] is real for all n
b)
h[n] is purely imaginary for all n
c)
h[n] is real for only even n
d)
h[n] is purely imaginary for only odd n
Anshu asked • yesterdayThe Eddy current damping is not used in electrodynamometer type instrument as- a)Eddy current losses are higher
- b)Mass of moving system
becomes higher - c)The magnetic field produced by
eddy currents introduce error - d)Operating field is weak due to
air cored.
Correct answer is option 'D'. Can you explain this answer?
The Eddy current damping is not used in electrodynamometer type instrument as
a)
Eddy current losses are higher
b)
Mass of moving system
becomes higher
becomes higher
c)
The magnetic field produced by
eddy currents introduce error
eddy currents introduce error
d)
Operating field is weak due to
air cored.
air cored.
Manjeet Verma asked • yesterdayIf wave form is given only for I period then 
Q. Waveform x (t) is - a)an even function with half wave symmetry.
- b)An odd function with half wave symmetry.
- c)an even function with no half wave symmetry.
- d)An odd function with no half wave symmetry.
Correct answer is option 'B'. Can you explain this answer?
If wave form is given only for I period then
Q. Waveform x (t) is
a)
an even function with half wave symmetry.
b)
An odd function with half wave symmetry.
c)
an even function with no half wave symmetry.
d)
An odd function with no half wave symmetry.
Rafiq Ahmed asked • yesterdayIn the circuit shown below, the voltage source has been connected for a long time enough for steady state condition to be reached. At time t=0, switch S is opened. Then open circuit voltage across AB is
- a)V.e - (R / L)
- b)V + V.e-R/L
- c)V
- d)o
Correct answer is option 'C'. Can you explain this answer?
In the circuit shown below, the voltage source has been connected for a long time enough for steady state condition to be reached. At time t=0, switch S is opened. Then open circuit voltage across AB is
a)
V.e - (R / L)
b)
V + V.e-R/L
c)
V
d)
o
Afifa Khan asked • yesterdayIn the diagram EC and FB are the two rays parallel to the mirror principal axis. Find the condition on q for which constructive interference at point B occurs between the ray ECB and incident ray FB, given AB = d?
- a)
- b)
- c)
- d)
Correct answer is option 'D'. Can you explain this answer?
In the diagram EC and FB are the two rays parallel to the mirror principal axis. Find the condition on q for which constructive interference at point B occurs between the ray ECB and incident ray FB, given AB = d?
a)
b)
c)
d)
is continuous at x = 0 then find f(0)?
Sanjay Prajapati asked • 2 days agoNon-minimum phase transfer function is defined as the transfer function- a)which has zeros only in the left-half s-plane
- b)which has poles in the right-half s-plane
- c)which has zeros in the right-half s-plane
- d)which has poles in the left-half s-plane
Correct answer is option 'C'. Can you explain this answer?
Non-minimum phase transfer function is defined as the transfer function
a)
which has zeros only in the left-half s-plane
b)
which has poles in the right-half s-plane
c)
which has zeros in the right-half s-plane
d)
which has poles in the left-half s-plane
Asusutosh Guru asked • 2 days agoIn the given circuit, the moving-coil meter gives full-scale deflection reading when the average current
flowing through it is 1mA. The moving coil meter has internal resistance of 50?. Find the value of R that results meter a full scale deflection.
- a)9950?
- b)1566.5?
- c)3133?
- d)6266?
Correct answer is option 'C'. Can you explain this answer?
In the given circuit, the moving-coil meter gives full-scale deflection reading when the average current
flowing through it is 1mA. The moving coil meter has internal resistance of 50?. Find the value of R that results meter a full scale deflection.
flowing through it is 1mA. The moving coil meter has internal resistance of 50?. Find the value of R that results meter a full scale deflection.
a)
9950?
b)
1566.5?
c)
3133?
d)
6266?
Ramya Srivalli asked • 2 days agoIn an unbiased P-N Junction zero current implies that- a) The potential biases has disappeared
- b)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-side
- c)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-side
- d)No carriers cross the Junction
Correct answer is option 'C'. Can you explain this answer?
In an unbiased P-N Junction zero current implies that
a)
The potential biases has disappeared
b)
No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-side
c)
Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-side
d)
No carriers cross the Junction
Karne Prabha asked • 2 days ago Unilateral Laplace Transform is applicable for the determination of linear constant coefficient differential equations with ________- a)Zero initial condition
- b)Non-zero initial condition
- c)Zero final condition
- d)Non-zero final condition
Correct answer is option 'B'. Can you explain this answer?
Unilateral Laplace Transform is applicable for the determination of linear constant coefficient differential equations with ________
a)
Zero initial condition
b)
Non-zero initial condition
c)
Zero final condition
d)
Non-zero final condition
Gavva Pavan Ramesh asked • 2 days agoIn each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts. Q. Statements : All apples are oranges Some oranges are papayas Conclusions : I. Some apples are papayas II. Some papayas are apples... more
In each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.
Q. Statements : All apples are oranges Some oranges are papayas Conclusions : I. Some apples are papayas II. Some papayas are apples
Vinitha Royal asked • 2 days agoMatch List-I with List-ll and select the correct answer using the codes given below the lists:
List-I
A. Immersion rod
B. Air conditioner
C. Automatic washing machine
D. Automatic control of traffic
List-ll
1. Open loop control system
2. Closed loop control system
3. Neither a closed loop nor an open loop system
- a)a
- b)b
- c)c
- d)d
Correct answer is option 'D'. Can you explain this answer?
Match List-I with List-ll and select the correct answer using the codes given below the lists:
List-I
A. Immersion rod
B. Air conditioner
C. Automatic washing machine
D. Automatic control of traffic
List-ll
1. Open loop control system
2. Closed loop control system
3. Neither a closed loop nor an open loop system
List-I
A. Immersion rod
B. Air conditioner
C. Automatic washing machine
D. Automatic control of traffic
List-ll
1. Open loop control system
2. Closed loop control system
3. Neither a closed loop nor an open loop system
a)
a
b)
b
c)
c
d)
d
Harshada Watkar asked • 2 days agoRead each sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is (d) (Ignore errors of punctuation, if any). Q.It was very unfortunate [1] / that he was deprived [2] / from the very thing which he delighted most [3].- a)1
- b)2
- c) 3
- d) No error
Correct answer is option 'C'. Can you explain this answer?
Read each sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is (d) (Ignore errors of punctuation, if any).
Q.
It was very unfortunate [1] / that he was deprived [2] / from the very thing which he delighted most [3].
a)
1
b)
2
c)
3
d)
No error
Keshav Raj asked • 2 days agoWith 10 V dc connected at port A in the linear nonreciprocal two-port network
shown below, the following were observed :(i) 1Ω connected at port B draws a current of 3A
(ii) 2.5 Ω connected at port B draws a current of 2A
Q.With 10 V dc connected at port A, the current drawn by 7 Ω connected at port B
is- a)3/7 A
- b)5/7 A
- c)1A
- d)9/7 A
Correct answer is option 'C'. Can you explain this answer?
With 10 V dc connected at port A in the linear nonreciprocal two-port network
shown below, the following were observed :
shown below, the following were observed :
(i) 1Ω connected at port B draws a current of 3A
(ii) 2.5 Ω connected at port B draws a current of 2A
(ii) 2.5 Ω connected at port B draws a current of 2A
Q.
With 10 V dc connected at port A, the current drawn by 7 Ω connected at port B
is
is
a)
3/7 A
b)
5/7 A
c)
1A
d)
9/7 A
then find 
Vidhya Gurram asked • 3 days agoSuppose that the probability of event A is 0.2 and the probability of event B is 0.4. Also, suppose that the two events are independent. Then P(A|B) is:- a) P(A) = 0.2
- b) P(A)/P(B) = 0.2/0.4 = ½
- c) P(A) × P(B) = (0.2)(0.4) = 0.08
- d) None of the above.
Correct answer is option 'A'. Can you explain this answer?
Suppose that the probability of event A is 0.2 and the probability of event B is 0.4. Also, suppose that the two events are independent. Then P(A|B) is:
a)
P(A) = 0.2
b)
P(A)/P(B) = 0.2/0.4 = ½
c)
P(A) × P(B) = (0.2)(0.4) = 0.08
d)
None of the above.
Prasad Depp asked • 3 days agoIn each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts. Q.Statements : All planets are moons All moons are stars.
Conclusions : I. All moon are planets II. All planets are stars... more
In each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.
Q.
Statements : All planets are moons All moons are stars.
Conclusions : I. All moon are planets II. All planets are stars
Conclusions : I. All moon are planets II. All planets are stars
Pubali Chowdhury asked • 4 days agoRead the following paragraph and choose the correct statement.
Climate change has reduced human security and threatened human well being. An ignored reality
of human progress is that human security largely depends upon environmental security. But on the
contrary, human progress seems contradictory to environment security. To keep up both at the
required level is a challenge to be addressed by one and all. One of the ways to curb the climate
change may be suitable scientific innovations, while the other may be the Gandhian perspective on
small scale progress with focus on sustainability.- a)Human progress and security are positively associated with environmental security
- b)Human progress is contradictory to environmental security.
- c)Human security is contradictory to environmental security.
- d)Human progress depends upon environmental security
Correct answer is option 'D'. Can you explain this answer?
Read the following paragraph and choose the correct statement.
Climate change has reduced human security and threatened human well being. An ignored reality
of human progress is that human security largely depends upon environmental security. But on the
contrary, human progress seems contradictory to environment security. To keep up both at the
required level is a challenge to be addressed by one and all. One of the ways to curb the climate
change may be suitable scientific innovations, while the other may be the Gandhian perspective on
small scale progress with focus on sustainability.
Climate change has reduced human security and threatened human well being. An ignored reality
of human progress is that human security largely depends upon environmental security. But on the
contrary, human progress seems contradictory to environment security. To keep up both at the
required level is a challenge to be addressed by one and all. One of the ways to curb the climate
change may be suitable scientific innovations, while the other may be the Gandhian perspective on
small scale progress with focus on sustainability.
a)
Human progress and security are positively associated with environmental security
b)
Human progress is contradictory to environmental security.
c)
Human security is contradictory to environmental security.
d)
Human progress depends upon environmental security
Cpallavireddy1999 Pallavi asked • 4 days agoThe p-type substrate in a monolithic circuit should be connected to- a)d.c. ground point
- b)must be floating
- c)The most negative voltage available in the circuit
- d)The most positive voltage available in the circuit
Correct answer is option 'C'. Can you explain this answer?
The p-type substrate in a monolithic circuit should be connected to
a)
d.c. ground point
b)
must be floating
c)
The most negative voltage available in the circuit
d)
The most positive voltage available in the circuit
Harmish Ramoliya asked • 4 days agoAn insurance company insured 2000 cyclists, 4000 scooter drivers and 6000 motorbike drivers. The probability of an accident involving a cyclist, scooter driver and a motorbike driver are 0.01, 0.03 and 0.15 respectively. One of the insured persons meets with an accident. What is the probability that he is a scooter driver?- a) 0.5
- b) 0.6
- c) 0.7
- d) None of these
Correct answer is option 'D'. Can you explain this answer?
An insurance company insured 2000 cyclists, 4000 scooter drivers and 6000 motorbike drivers. The probability of an accident involving a cyclist, scooter driver and a motorbike driver are 0.01, 0.03 and 0.15 respectively. One of the insured persons meets with an accident. What is the probability that he is a scooter driver?
a)
0.5
b)
0.6
c)
0.7
d)
None of these
Pothala Padmaja asked • 5 days agoQ. No. 11 – 35 Carry One Mark EachQ.A region of negative differential resistance is observed in the current voltage characteristics
of a silicon PN junction if- a)Both the P-region and the N-region are heavily doped
- b)The N-region is heavily doped compared to the P-region
- c)The P-region is heavily doped compared to the N-region
- d)An intrinsic silicon region is inserted between the P-region and the N-region
Correct answer is option 'A'. Can you explain this answer?
Q. No. 11 – 35 Carry One Mark Each
Q.
A region of negative differential resistance is observed in the current voltage characteristics
of a silicon PN junction if
of a silicon PN junction if
a)
Both the P-region and the N-region are heavily doped
b)
The N-region is heavily doped compared to the P-region
c)
The P-region is heavily doped compared to the N-region
d)
An intrinsic silicon region is inserted between the P-region and the N-region
Arifa Attar asked • 5 days agoMatch List-I (Frequencies spectrum) with List-II (Frequency range) and select the correct answer using the codes given-below the lists:
List-I
A. Extremely low frequency
B. Low frequencies
C. Voice frequencies
D. Very low frequencies
List-II
1. 30-300 kHz
2. 300-3000 Hz
3. 3-30 kHz
4. 30-300 Hz
- a)A
- b)B
- c)C
- d)D
Correct answer is option 'A'. Can you explain this answer?
Match List-I (Frequencies spectrum) with List-II (Frequency range) and select the correct answer using the codes given-below the lists:
List-I
A. Extremely low frequency
B. Low frequencies
C. Voice frequencies
D. Very low frequencies
List-II
1. 30-300 kHz
2. 300-3000 Hz
3. 3-30 kHz
4. 30-300 Hz
List-I
A. Extremely low frequency
B. Low frequencies
C. Voice frequencies
D. Very low frequencies
List-II
1. 30-300 kHz
2. 300-3000 Hz
3. 3-30 kHz
4. 30-300 Hz
a)
A
b)
B
c)
C
d)
D
Astha Jain asked • 5 days agoConsider the following reasons for using antenna coupler - To prevent illegal radiation of spurious frequencies
- To tune out reactive components of antenna impedance
- To have correct value of load impedance for transmitter.
Which of the above are correct?- a)1, 2, 3
- b)1, 2
- c)1 only
- d)2, 3
Correct answer is option 'A'. Can you explain this answer?
Consider the following reasons for using antenna coupler
- To prevent illegal radiation of spurious frequencies
- To tune out reactive components of antenna impedance
- To have correct value of load impedance for transmitter.
a)
1, 2, 3
b)
1, 2
c)
1 only
d)
2, 3
Murali Rmurali asked • 6 days agoOne of the parts (A, B, C, D) in the sentence given below contains an ERROR.
Which one of the following is INCORRECT ?
I requested that he should be given the driving test today instead of tomorrow.- a)requested that
- b)should be give
- c)the driving test
- d)instead of tomorrow
Correct answer is option 'B'. Can you explain this answer?
One of the parts (A, B, C, D) in the sentence given below contains an ERROR.
Which one of the following is INCORRECT ?
I requested that he should be given the driving test today instead of tomorrow.
Which one of the following is INCORRECT ?
I requested that he should be given the driving test today instead of tomorrow.
a)
requested that
b)
should be give
c)
the driving test
d)
instead of tomorrow
Mahithaa asked • 6 days agoConsider the following statements associated with data representation by 1’s and 2‘s complements:
1. The 2’s complement system requires only one arithmetic operation.
2. The 1 ’s complement system requires two arithmetic operations.
3. The 1 's complement is often used in logical manipulations for inversion operation.
4. The 2 ’s complement is used only for arithmetic applications.Which of the statements given above are correct?- a)1 , 2 , 3 and 4
- b)1 ,3 and 4
- c)2, 3 and 4
- d)1,2 and 3
Correct answer is option 'A'. Can you explain this answer?
Consider the following statements associated with data representation by 1’s and 2‘s complements:
1. The 2’s complement system requires only one arithmetic operation.
2. The 1 ’s complement system requires two arithmetic operations.
3. The 1 's complement is often used in logical manipulations for inversion operation.
4. The 2 ’s complement is used only for arithmetic applications.
1. The 2’s complement system requires only one arithmetic operation.
2. The 1 ’s complement system requires two arithmetic operations.
3. The 1 's complement is often used in logical manipulations for inversion operation.
4. The 2 ’s complement is used only for arithmetic applications.
Which of the statements given above are correct?
a)
1 , 2 , 3 and 4
b)
1 ,3 and 4
c)
2, 3 and 4
d)
1,2 and 3
Satyajith I 15bec144 asked • 6 days agoIn a school of 320 students, 85 students are in the band, 200 students are on sports teams, and 60 students participate in both activities. How many students are involved in either band or sports?- a) 300 students
- b) 225 students
- c) 150 students
- d) Can’t be determined
Correct answer is option 'B'. Can you explain this answer?
In a school of 320 students, 85 students are in the band, 200 students are on sports teams, and 60 students participate in both activities. How many students are involved in either band or sports?
a)
300 students
b)
225 students
c)
150 students
d)
Can’t be determined
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