Electrical Engineering (EE)
Vishnu A asked • 3 minutes agoAssertion (A): R-2R ladder type DAC has higher speed of operation than weighted resistor DAC Reason (R): R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors- a)Both A and R are correct and R is correct explanation of A
- b)Both A and R are correct but R is not correct explanation of A
- c)A is true, R is false
- d)A is false, R is true
Correct answer is option 'B'. Can you explain this answer?
Assertion (A): R-2R ladder type DAC has higher speed of operation than weighted resistor DAC
Reason (R): R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors
a)
Both A and R are correct and R is correct explanation of A
b)
Both A and R are correct but R is not correct explanation of A
c)
A is true, R is false
d)
A is false, R is true
Satyajit Padhi asked • 23 minutes agoConsider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Akshata Ngl asked • 25 minutes agoX(t)=u(t 2)-u(t-2) h(t)=u(t 2)-u(t-2) Find x(t)*h(t) with graphical method?
Bhuvaneshwari Kanagaraj asked • 1 hour agoThe main characteristics of a Darlington amplifier are- a)high input impedance, low output impedance and high current gain.
- b)low input impedance, low output impedance and low current gain.
- c)high input impedance, high output impedance and high current gain.
- d)low input impedance, low output impedance and high current gain.
Correct answer is option 'A'. Can you explain this answer?
The main characteristics of a Darlington amplifier are
a)
high input impedance, low output impedance and high current gain.
b)
low input impedance, low output impedance and low current gain.
c)
high input impedance, high output impedance and high current gain.
d)
low input impedance, low output impedance and high current gain.
Balaji Suryawanshi asked • 1 hour ago If two induction motors A and B are identical except that the airgap of motor 'A' is 50% greater than that of motor 'B' then- a)the no-load power factor of A will be better than that of B.
- b)
the no-load power factor of A will be poorer than that of B. - c)the core losses of A will be more than those of B.
- d)the operating flux of A will be smaller than that of B.
Correct answer is option 'B'. Can you explain this answer?
If two induction motors A and B are identical except that the airgap of motor 'A' is 50% greater than that of motor 'B' then
a)
the no-load power factor of A will be better than that of B.
b)
the no-load power factor of A will be poorer than that of B.
c)
the core losses of A will be more than those of B.
d)
the operating flux of A will be smaller than that of B.
Pro Pro asked • 1 hour agoAssertion (A): The realization of one port LC networks can be done in two. configurations (commonly known as Cauer-I and Cauer-II forms) using the continued fraction expansion of the driving point impedance.
Reason (R): The basic form of the Cauer realization being a ladder type network.- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'A'. Can you explain this answer?
Assertion (A): The realization of one port LC networks can be done in two. configurations (commonly known as Cauer-I and Cauer-II forms) using the continued fraction expansion of the driving point impedance.
Reason (R): The basic form of the Cauer realization being a ladder type network.
Reason (R): The basic form of the Cauer realization being a ladder type network.
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A.
c)
A is true but R is false.
d)
A is false but R is true.
Suraj Kumar asked • 3 hours agoWhich of the following device can be used as a phase advancer ?- a)3-f induction motor squirrel cage type
- b)3-f induction motor slip ring type
- c)synchronous motor working at leading power factor
- d)synchronous motor working at lagging power factor
Correct answer is option 'C'. Can you explain this answer?
Which of the following device can be used as a phase advancer ?
a)
3-f induction motor squirrel cage type
b)
3-f induction motor slip ring type
c)
synchronous motor working at leading power factor
d)
synchronous motor working at lagging power factor
Sunil Manjani asked • 4 hours agoOne of the advantages of base modulation over collector modulation of a transistor class C amplifier is- a)lower modulating power required
- b)higher power output per transistor
- c)better efficiency
- d)better transmission
Correct answer is option 'A'. Can you explain this answer?
One of the advantages of base modulation over collector modulation of a transistor class C amplifier is
a)
lower modulating power required
b)
higher power output per transistor
c)
better efficiency
d)
better transmission
Mohsin Khan asked • 6 hours agoWhile using air-blast circuit beaker, current chopping is a phenomenon often observed when- a)A long overhead line is switched off
- b)A bank of capacitors is switched off
- c)A transformer on no-load is switched off
- d)A heavy load is switched off
Correct answer is option 'C'. Can you explain this answer?
While using air-blast circuit beaker, current chopping is a phenomenon often observed when
a)
A long overhead line is switched off
b)
A bank of capacitors is switched off
c)
A transformer on no-load is switched off
d)
A heavy load is switched off
Shaik Shahina asked • 8 hours agoconsider the following statements :
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
consider the following statements :
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Mohsin Khan asked • 9 hours agoTo prevent maloperation of differentially relay while energizing a transformer, the relay restraining coil is biased with- a)Second harmonic current
- b)Third harmonic current
- c)Fifth harmonic current
- d)Seventh harmonic current
Correct answer is option 'A'. Can you explain this answer?
To prevent maloperation of differentially relay while energizing a transformer, the relay restraining coil is biased with
a)
Second harmonic current
b)
Third harmonic current
c)
Fifth harmonic current
d)
Seventh harmonic current
Indrajit Mal asked • 10 hours agoIf the separation between the three phase of a transmission line is increased then- a)the inductance will increase and capacitance will remain unchanged
- b)both inductance and capacitance will increase
- c)the inductance will increase and the capacitance will decrease
- d)the inductance will decrease and the capacitance will increase
Correct answer is option 'C'. Can you explain this answer?
If the separation between the three phase of a transmission line is increased then
a)
the inductance will increase and capacitance will remain unchanged
b)
both inductance and capacitance will increase
c)
the inductance will increase and the capacitance will decrease
d)
the inductance will decrease and the capacitance will increase
Ashish Verma asked • 10 hours agoStatement for Linked Answer Questions: 62 & 63In the following network, the voltage magnitudes at all buses are equal to 1 pu, the voltage phase angles are very small, and the line resistances are negligible. All the line reactances are equal to j1
The voltage phase angles in rad at buses 2 and 3 are- a)
- b)
- c)
- d)
Correct answer is option 'C'. Can you explain this answer?
Statement for Linked Answer Questions: 62 & 63
In the following network, the voltage magnitudes at all buses are equal to 1 pu, the voltage phase angles are very small, and the line resistances are negligible. All the line reactances are equal to j1
The voltage phase angles in rad at buses 2 and 3 are
a)
b)
c)
d)
Sunil Manjani asked • 10 hours agoWhen electromagnetic waves are reflected at an angle from a wall, their wave-length along the wall is- a)the same as in free space
- b)the same as the wavelength perpendicular to the wall
- c)shortened because of the Doppler effect
- d)greater than in the actual direction of propagation
Correct answer is option 'D'. Can you explain this answer?
When electromagnetic waves are reflected at an angle from a wall, their wave-length along the wall is
a)
the same as in free space
b)
the same as the wavelength perpendicular to the wall
c)
shortened because of the Doppler effect
d)
greater than in the actual direction of propagation
Sunil Manjani asked • 11 hours agoA Wien-bridge is used to measure the frequency of the input signal. However, the input signal has 10% third harmonic distortion. Specifically the signal is 2 sin 400 πt + 0.2 sin 1200 πt (with t insec). With this input the balance will- a)Lead to a null indication and setting will correspond to a frequency of 200 Hz
- b)Lead to a null indication and setting will correspond to 260 Hz
- c)Lead to a null indication and setting will correspond to 400 Hz
- d)Not lead to null indication
Correct answer is option 'D'. Can you explain this answer?
A Wien-bridge is used to measure the frequency of the input signal. However, the input signal has 10% third harmonic distortion. Specifically the signal is 2 sin 400 πt + 0.2 sin 1200 πt (with t insec). With this input the balance will
a)
Lead to a null indication and setting will correspond to a frequency of 200 Hz
b)
Lead to a null indication and setting will correspond to 260 Hz
c)
Lead to a null indication and setting will correspond to 400 Hz
d)
Not lead to null indication
Anjali Sb asked • 11 hours agoAcceptor impurity atom in germanium results in- a)Increased forbidden energy gap
- b)Reduced forbidden energy gap
- c)New narrow energy band slightly above the valence level
- d)New discrete energy level slightly above the valence level
Correct answer is option 'D'. Can you explain this answer?
Acceptor impurity atom in germanium results in
a)
Increased forbidden energy gap
b)
Reduced forbidden energy gap
c)
New narrow energy band slightly above the valence level
d)
New discrete energy level slightly above the valence level
Sunil Babu asked • 11 hours agoThe value of the voltage gain (Av) for the common source with source resistance (represented by A1) and common gate configuration (represented by A2) are related to each other by- a) A1 > A2
- b) |A1| > |A2|
- c) A1 < A2
- d) A1 > A2 and |A1| > |A2|
Correct answer is option 'C'. Can you explain this answer?
The value of the voltage gain (Av) for the common source with source resistance (represented by A1) and common gate configuration (represented by A2) are related to each other by
a)
A1 > A2
b)
|A1| > |A2|
c)
A1 < A2
d)
A1 > A2 and |A1| > |A2|
ANIMESH SAHU asked • 12 hours agoFor the minimum phase system to be stable:- a)Phase margin should be negative and gain margin should be positive
- b)Phase margin should be positive and gain margin should be negative
- c)Both phase margin and gain margin should be positive
- d)Both phase margin and gain margin should be negative
Correct answer is option 'C'. Can you explain this answer?
For the minimum phase system to be stable:
a)
Phase margin should be negative and gain margin should be positive
b)
Phase margin should be positive and gain margin should be negative
c)
Both phase margin and gain margin should be positive
d)
Both phase margin and gain margin should be negative
Shital Devake asked • 13 hours agoGalloping in transmission line conductors arises generally due to- a)Asymmetrical layers of ice formation
- b)Vortex phenomenon in light winds
- c)Heavy weight of the line conductors
- d)Adoption of horizontal conductor configurations
Correct answer is option 'A'. Can you explain this answer?
Galloping in transmission line conductors arises generally due to
a)
Asymmetrical layers of ice formation
b)
Vortex phenomenon in light winds
c)
Heavy weight of the line conductors
d)
Adoption of horizontal conductor configurations
Sunil Manjani asked • 14 hours agoA directional coupler with three or more holes is sometimes used in preference to the two-hole coupler- a)because it is more efficient
- b)to increase coupling of the signal
- c)to reduce spurious mode generation
- d)to increase the bandwidth of the system
Correct answer is option 'D'. Can you explain this answer?
A directional coupler with three or more holes is sometimes used in preference to the two-hole coupler
a)
because it is more efficient
b)
to increase coupling of the signal
c)
to reduce spurious mode generation
d)
to increase the bandwidth of the system
Vikash Parashar asked • 15 hours agoA microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is- a)64 K
- b)16 K
- c)8 K
- d)4 K
Correct answer is option 'A'. Can you explain this answer?
A microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is
a)
64 K
b)
16 K
c)
8 K
d)
4 K
JYOTI CHARAN asked • 15 hours agoMatch List-I (Physical quantities) with List-ll (Dimensions) and select the correct answer using the codes given below the lists:
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1- a)2, 4, 3, 1
- b)4, 2, 3, 1
- c)1, 2, 1, 3
- d)4, 2, 1, 3
Correct answer is option 'C'. Can you explain this answer?
Match List-I (Physical quantities) with List-ll (Dimensions) and select the correct answer using the codes given below the lists:
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1
a)
2, 4, 3, 1
b)
4, 2, 3, 1
c)
1, 2, 1, 3
d)
4, 2, 1, 3
and v is the line velocity. If 
is the position vector given by 
then the value of curl 
will be equal to 
Sunil Manjani asked • 16 hours agoAs a result of reflections from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater greater than the velocity of light in space. This is called the- a)velocity of propagation
- b)normal velocity
- c)group velocity
- d)phase velocity
Correct answer is option 'D'. Can you explain this answer?
As a result of reflections from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater greater than the velocity of light in space. This is called the
a)
velocity of propagation
b)
normal velocity
c)
group velocity
d)
phase velocity
Meera Cherian asked • 17 hours agoIn a 3-core extra-high voltage cable, a metallic screen around each core-insulation is provided to- a)Facilitate heat dissipation
- b)Give mechanical strength
- c)Obtain longitudinal electric stress
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
In a 3-core extra-high voltage cable, a metallic screen around each core-insulation is provided to
a)
Facilitate heat dissipation
b)
Give mechanical strength
c)
Obtain longitudinal electric stress
d)
None of the above
Vivek Gautam asked • 17 hours agoA series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be- a)1 kHz
- b)10 kHz
- c)1 MHz
- d)0.1 kHz
Correct answer is option 'A'. Can you explain this answer?
A series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be
a)
1 kHz
b)
10 kHz
c)
1 MHz
d)
0.1 kHz
Indrajit Mal asked • 17 hours agoA pure capacitance connected across 50Hz, 230V supply consumes 0.04W. This consumption is attributed to- a)ohmic loss due to ohmic resistance of plates
- b)loss of energy in dielectrics
- c)capacitive reactance in ohms
- d)both (a) & (b)
Correct answer is option 'D'. Can you explain this answer?
A pure capacitance connected across 50Hz, 230V supply consumes 0.04W. This consumption is attributed to
a)
ohmic loss due to ohmic resistance of plates
b)
loss of energy in dielectrics
c)
capacitive reactance in ohms
d)
both (a) & (b)
Sai Kiran asked • 17 hours agoIf Pc & Psc represent core & full-load ohmic losses respectively, the maximum KVAdelivered to load corresponding to maximum efficiency is equal to rated KVA multiplied by- a)Pc/Psc
- b)√Pc / Psc
- c)(Pc/Psc)2
- d)(Psc/Pc)2
Correct answer is option 'B'. Can you explain this answer?
If Pc & Psc represent core & full-load ohmic losses respectively, the maximum KVAdelivered to load corresponding to maximum efficiency is equal to rated KVA multiplied by
a)
Pc/Psc
b)
√Pc / Psc
c)
(Pc/Psc)2
d)
(Psc/Pc)2
KUMARI RENU asked • 18 hours agoWith regard to the filtering property, the lead compensator and the lag compensator are, respectively.- a)low pass and high pass filters
- b)high pass and low pass filters
- c)both high pass filters
- d)both low pass filters
Correct answer is option 'B'. Can you explain this answer?
With regard to the filtering property, the lead compensator and the lag compensator are, respectively.
a)
low pass and high pass filters
b)
high pass and low pass filters
c)
both high pass filters
d)
both low pass filters
Bindu Reddy asked • 18 hours agoThe photo electric current in amperes per watt of incident light depend on- a)frequency of incident light
- b)intensity of incident light
- c)frequency & intensity of incident light
- d)frequency wavelength and intensity of incident light
Correct answer is option 'A'. Can you explain this answer?
The photo electric current in amperes per watt of incident light depend on
a)
frequency of incident light
b)
intensity of incident light
c)
frequency & intensity of incident light
d)
frequency wavelength and intensity of incident light
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