Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
Assertion (A): A non-sinusoidal wave can be expressed in terms of sine waves of different frequencies which are multiples of the frequency of fundamental. Reason (R): If negative half of a complex wave is a reproduction of the positive half, the even harmonics are absent. | |
A. | Both A and R are correct and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are correct but R is not correct explanation of A [Correct Answer] |
C. | A is true, R is false [Wrong Answer] |
D. | A is false, R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The cut off wavelength in circular waveguide
guide diameter
square of guide diameter
cube of guide diameter
square root of guide diameter
⇒ Which of the following insulating material is restricted to temperatures below 100°C?
Micanite
Asbestos
Teflon
Polythene
⇒ The point P in the following figure is stock at 1. The output f wil
ABC
A
AB C
A
⇒ The minimum gate source voltage that creates the n-type inversion layer is called
cut off voltage
on voltage
threshold voltage
zener voltage
⇒ In Z_{RC} (s) = 0 at s = ∞, the last element in first Cauer form is
R
C
R and C in series
R and C in parallel
⇒ In a system an input resistance of 20 kΩ causes a noise voltage of 15μV. If two such input resistances each of 20 kΩ are used in parallel, the total noise voltage will be about
15 μV
30 μV
7.5 μV
10.6 μV
⇒ The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be
1011
1101
1100
1110
⇒ In a 3 phase semiconverter, the output voltage becomes discontinuous for
firing angle > 30°
firing angle > 60°
firing angle > 90°
firing angle > 120°
⇒ A dynamic RAM cell which holds 5 V has to be refreshed every 20 ms so that the stored voltage does not fall by more than 0.5 V. If the cell has a constant discharge current of 0.1 pA, the storage capacitance of cell is
4 x 10^{-6} F
4 x 10^{-9} F
4 x 10^{-12} F
4 x 10^{-15} F
⇒ Addition of 0.3 to 3.5% silicon to iron
increases the electrical resistivity of iron
decreases the electrical resistivity of iron
does not change electrical resistivity of iron
silicon can't be added with iron
⇒ The number of valence electrons in trivalent impurity is
5
4
3
1
⇒ In the field controlled motor the entire damping comes from
armature resistance
back emf
motor friction and load
field resistance
⇒ As per Shannon-Hartley theorem, a noise less Gaussian channel has
zero capacity
infinite capacity
small capacity
none of the above
⇒ Maxterm designation for A + B + C is
M_{0}
M_{1}
M_{3}
M_{4}
⇒ Solution of Laplace equations, which are continuous through the second derivative, are called
bessel functions
odd functions
harmonic functions
fundamental functions
⇒ Which of the following is not a non-linear element?
Transistor
Heater coil
Diode
Electric arc with unlike electrodes
⇒ In figure, Z_{a} = 100∠50°, Z_{b} = 300∠-90° and Z_{c} = 200∠0°. For balanced condition, Z_{d} will
600∠ - 40°
600∠140°
600∠ - 140°
150∠140°
⇒ The purpose of series quadrature windings in amplidyne is to
neutralize the effect of armature reaction
reduce commutation difficulties
increase the gain
increase response time
⇒ Let the initial contents of
1 and 00000011
0 and 00000111
1 and 00000111
0 and 00000011
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
⇒ An n type semiconductor is illuminated by a steady flux of photons with energy greater than the band gap energy. The change in conductivity Δσ obeys which relati
Δσ = 0
Δσ = e(σ_{n} + σ_{p}) Δ_{n}
Δσ = e(μ_{n}Δ_{n} - μ_{p}Δ_{p})
Δσ = e μ_{n}Δ_{n}
⇒ Photoconductive devices uses
metallic conductors
good quality insulators
semiconductors
either (a) or (c)
⇒ The opposition of an inductor to current flow
depends only on the resistance of the coil
depends on the magnitude of the applied voltage
varies directly with frequency
varies inversely with frequency
⇒ In 8086 the number of lines on which data and address is multiplexed is
8
16
20
32
⇒ An I/O processor controls the flow of information between
cache memory and I/O devices
main memory and I/O devices
two I/O devices
cache and main memory
⇒
A-1, B-2, C-3, D-4
A-3, B-4, C-1, D-2
A-2, B-3, C-4, D-1
A-4, B-1, C-2, D-3
⇒ Which SNR denotes excellent picture quality in TV?
50 dB
30 dB
15 dB
5 dB
⇒ A capacitor whose capacitance C_{t} = C_{0} (1- cos ωt) is fed by a sinusoidal voltage v = V_{0} sin ωt. The equation for current i is
ω C_{0}V_{0} cos ωt
ω C_{0}V_{0} sin ωt
ω C_{0}V_{0} (cos ωt - cos^{2} ωt)
none of the above
⇒ The signal to noise ratio in telemetry should be better than
5 db
10 db
25 db
60 db
⇒ The circuit consisting of two transistor connected in series with the d.c. supply voltage is called
push pull
differential pair
stacked V^{+}
complementary symmetry
⇒ The cut off wavelength in circular waveguide
guide diameter
square of guide diameter
cube of guide diameter
square root of guide diameter
⇒ Which of the following insulating material is restricted to temperatures below 100°C?
Micanite
Asbestos
Teflon
Polythene
⇒ The point P in the following figure is stock at 1. The output f wil
ABC
A
AB C
A
⇒ The minimum gate source voltage that creates the n-type inversion layer is called
cut off voltage
on voltage
threshold voltage
zener voltage
⇒ In Z_{RC} (s) = 0 at s = ∞, the last element in first Cauer form is
R
C
R and C in series
R and C in parallel
⇒ In a system an input resistance of 20 kΩ causes a noise voltage of 15μV. If two such input resistances each of 20 kΩ are used in parallel, the total noise voltage will be about
15 μV
30 μV
7.5 μV
10.6 μV
⇒ The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be
1011
1101
1100
1110
⇒ In a 3 phase semiconverter, the output voltage becomes discontinuous for
firing angle > 30°
firing angle > 60°
firing angle > 90°
firing angle > 120°
⇒ A dynamic RAM cell which holds 5 V has to be refreshed every 20 ms so that the stored voltage does not fall by more than 0.5 V. If the cell has a constant discharge current of 0.1 pA, the storage capacitance of cell is
4 x 10^{-6} F
4 x 10^{-9} F
4 x 10^{-12} F
4 x 10^{-15} F
⇒ Addition of 0.3 to 3.5% silicon to iron
increases the electrical resistivity of iron
decreases the electrical resistivity of iron
does not change electrical resistivity of iron
silicon can't be added with iron
⇒ The number of valence electrons in trivalent impurity is
5
4
3
1
⇒ In the field controlled motor the entire damping comes from
armature resistance
back emf
motor friction and load
field resistance
⇒ As per Shannon-Hartley theorem, a noise less Gaussian channel has
zero capacity
infinite capacity
small capacity
none of the above
⇒ Maxterm designation for A + B + C is
M_{0}
M_{1}
M_{3}
M_{4}
⇒ Solution of Laplace equations, which are continuous through the second derivative, are called
bessel functions
odd functions
harmonic functions
fundamental functions
⇒ Which of the following is not a non-linear element?
Transistor
Heater coil
Diode
Electric arc with unlike electrodes
⇒ In figure, Z_{a} = 100∠50°, Z_{b} = 300∠-90° and Z_{c} = 200∠0°. For balanced condition, Z_{d} will
600∠ - 40°
600∠140°
600∠ - 140°
150∠140°
⇒ The purpose of series quadrature windings in amplidyne is to
neutralize the effect of armature reaction
reduce commutation difficulties
increase the gain
increase response time
⇒ Let the initial contents of
ACC and CY
in 8085 be - CY = 1
- ACC = 10000001
After the instruction RAL
is executed twice the contents of CY and ACC
respectively will be1 and 00000011
0 and 00000111
1 and 00000111
0 and 00000011
⇒
Assertion (A): FET is a unipolar device.
Reason (R): BJT is bipolar device.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
⇒ An n type semiconductor is illuminated by a steady flux of photons with energy greater than the band gap energy. The change in conductivity Δσ obeys which relati
Δσ = 0
Δσ = e(σ_{n} + σ_{p}) Δ_{n}
Δσ = e(μ_{n}Δ_{n} - μ_{p}Δ_{p})
Δσ = e μ_{n}Δ_{n}
⇒ Photoconductive devices uses
metallic conductors
good quality insulators
semiconductors
either (a) or (c)
⇒ The opposition of an inductor to current flow
depends only on the resistance of the coil
depends on the magnitude of the applied voltage
varies directly with frequency
varies inversely with frequency
⇒ In 8086 the number of lines on which data and address is multiplexed is
8
16
20
32
⇒ An I/O processor controls the flow of information between
cache memory and I/O devices
main memory and I/O devices
two I/O devices
cache and main memory
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Mu Metal | 1. | very high magnetic permeability |
B. | Samrium/cobalt | 2. | very high magnetic remanence |
C. | Sapphire | 3. | very high thermal conductivity |
D. | Ferrites | 4. | very stable magnetic permeability |
A-1, B-2, C-3, D-4
A-3, B-4, C-1, D-2
A-2, B-3, C-4, D-1
A-4, B-1, C-2, D-3
⇒ Which SNR denotes excellent picture quality in TV?
50 dB
30 dB
15 dB
5 dB
⇒ A capacitor whose capacitance C_{t} = C_{0} (1- cos ωt) is fed by a sinusoidal voltage v = V_{0} sin ωt. The equation for current i is
ω C_{0}V_{0} cos ωt
ω C_{0}V_{0} sin ωt
ω C_{0}V_{0} (cos ωt - cos^{2} ωt)
none of the above
⇒ The signal to noise ratio in telemetry should be better than
5 db
10 db
25 db
60 db
⇒ The circuit consisting of two transistor connected in series with the d.c. supply voltage is called
push pull
differential pair
stacked V^{+}
complementary symmetry