Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
If input frequency is 50 Hz, the frequency of output wave in a full wave diode rectifier circuit is | |
A. | 25 Hz [Wrong Answer] |
B. | 50 Hz [Wrong Answer] |
C. | 100 Hz [Correct Answer] |
D. | 200 Hz [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A rectangular pulse train s(t) is shown in figure is convolved with the signal cos^{2}(4p x 10^{3}t). The convolved signal will
DC
12 kHZ sinusoidal
8 kHZ sinusoidal
14 kHZ sinusoidal
⇒ In the given figure shows a periodic triangular wave. The Fourier series will
all cosine terms
all sine terms
odd cosine terms
odd sine terms
⇒ If X = 2.5 and Y = 2.5, which of the following expressions would give the result as 5/7?
X + 2.5 / Y + 3.0
(X + 2.5) / Y + 4.5
(X + 2.5) / (Y + 4.5)
(X + 2.5) / Y + 3.5
⇒ Two resistances are : R_{1} = 36 Ω ± 1.89 Ω and R_{2} = 75 Ω ± 3.75 Ω. The sum R_{1} + R_{2} along with limiting error is
111 Ω ± 1.8 Ω
111 Ω ± 3.75 Ω
111 Ω ± 5.55 Ω
111 Ω ± 1.95 Ω
⇒
A-1, B-2, C-3, D-4
A-3, B-4, C-2, D-1
A-2, B-3, C-4, D-1
A-4, B-3, C-2, D-1
⇒ Which of the following should dominant wave have?
Lowest cut off frequency
Highest cut off frequency
No attenuation
No phase shift
⇒ Which one of the following is analog?
PCM
PWM
Delta modulation
Differential PCM
⇒
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
⇒ The given characteristic polynomial s^{4} + s^{3} + 2s^{2} + 2s + 3 = 0 has
zero root in RHS of s-plane
one root in RHS of s-plane
two roots in RHS of s-plane
three roots in RHS of s-plane
⇒ A wavelength of 1 mm could be expected in
VLF
HF
EHF
SHF
⇒ In a single phase half wave converter feeding resistive load and full wave converter (M - 2 connection) feeding a resistive load the circuit conditions are similar. The firing angle is a. Then the waveshapes of voltages across thyristors
are similar
are not similar
may be similar or dissimilar
are similar only for some values of a
⇒ Directivity means
maximum directive gain
zero directive gain
minimum directive gain
none of the above
⇒ In a colour TV receiver AFT stands for
Automatic Fine Tuning
Automatic Frequency Tuning
Automatic Field Tuning
Alignment Frequency Tuning
⇒ A TV remote control works on the principle of
pulse code modulated ultra violet light
pulse code modulated infrared light
demodulation
either (a) or (b)
⇒ In a tape recorder the output from RF oscillator is given to
only erase head coil
only record head coil
coils of both erase head and record head
none of the above
⇒ A TEM wave is incident normally on a perfect conductor. The E and H fields at boundary will respectively be
minimum and maximum
minimum and minimum
maximum and minimum
maximum and maximum
⇒ In C-language f- = 9 is equivalent to
f = -9
f = f - 9
f = 9 - 1
-f = 9
⇒ As frequency is increased, the skin effect
increases
decreases
remains the same
either (b) or (c)
⇒ The high voltage level of a digital signal in positive logic is
1
0
either 1 or 0
-1
⇒ Unit of e is __________ .
coulomb/newton-metre
coulomb^{2}/newton-metre
Farad/metre
Farad^{2}/metre
⇒ Consider a parallel plate capacitor being charged. Identify the incorrect statements
Energy stored in the capacitor does not enter it through the connecting wires but through the space around the wires and plates uf capacitor
Rate at which energy flows into this volume is equal to the integration of the Poynting vector over the boundary of the volume between the plates.
The Poynting vector points everywhere radially outward of the volume between the plates
The Poynting vector points everywhere radially into the volume between the plates.
⇒ A communication receiver is
TRF receiver
a superheterodyne receiver
either (a) or (b)
neither (a) nor (b)
⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
G(s) is an all-pass filter
G(s) has a zero in the right-half plane
G(s) is the impedance of a passive network
G(s) is marginally stable
⇒ The correct hierarchy of operations for the operators & &, = = , = , * is
& & , = = , = , *
* , = = , & & , =
* , & & , = = , =
= , & & , = = , *
⇒ In the circuit shown, the power supplied by the voltage so
0 W
5 W
10 W
100 W
⇒ A series circuit has fixed resistance and variable reactance. The impedance locus will be a straight line parallel to Y-axis.
TRUE
FALSE
⇒ Consider the following stateme
1, 2 and 3
1 and 2 only
2, 3 and 4
2, 3 and 4
⇒ Which of the following parameters of CE circuit has the unit of ohms?
h_{ie}
h_{re}
h_{fe}
h_{oe}
⇒ In the given figure the input frequency f = 0.1 (1/2 p
0 dB
3 dB
-3 dB
20 dB
⇒ The nodal method of circuit analysis is based on
KVLs, ohm law
KCLs, ohm law
KCLs, KVL
KCL, KVL, ohms law
⇒ A rectangular pulse train s(t) is shown in figure is convolved with the signal cos^{2}(4p x 10^{3}t). The convolved signal will
DC
12 kHZ sinusoidal
8 kHZ sinusoidal
14 kHZ sinusoidal
⇒ In the given figure shows a periodic triangular wave. The Fourier series will
all cosine terms
all sine terms
odd cosine terms
odd sine terms
⇒ If X = 2.5 and Y = 2.5, which of the following expressions would give the result as 5/7?
X + 2.5 / Y + 3.0
(X + 2.5) / Y + 4.5
(X + 2.5) / (Y + 4.5)
(X + 2.5) / Y + 3.5
⇒ Two resistances are : R_{1} = 36 Ω ± 1.89 Ω and R_{2} = 75 Ω ± 3.75 Ω. The sum R_{1} + R_{2} along with limiting error is
111 Ω ± 1.8 Ω
111 Ω ± 3.75 Ω
111 Ω ± 5.55 Ω
111 Ω ± 1.95 Ω
⇒
Match the following:
List I (DOS commands) | List II (Meaning) | ||
---|---|---|---|
A. | ATTRIB | 1. | Displays all directories and subdirectories |
B. | SCAN DISK | 2. | Moves files to another director |
C. | MOVE | 3. | Checks the status of disc |
D. | TREE | 4. | Hides a file |
A-1, B-2, C-3, D-4
A-3, B-4, C-2, D-1
A-2, B-3, C-4, D-1
A-4, B-3, C-2, D-1
⇒ Which of the following should dominant wave have?
Lowest cut off frequency
Highest cut off frequency
No attenuation
No phase shift
⇒ Which one of the following is analog?
PCM
PWM
Delta modulation
Differential PCM
⇒
Assertion (A): 2's complement arithmetic is preferred in digital computers
Reason (R): The hardware required to obtain 2's complement is simple.
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
⇒ The given characteristic polynomial s^{4} + s^{3} + 2s^{2} + 2s + 3 = 0 has
zero root in RHS of s-plane
one root in RHS of s-plane
two roots in RHS of s-plane
three roots in RHS of s-plane
⇒ A wavelength of 1 mm could be expected in
VLF
HF
EHF
SHF
⇒ In a single phase half wave converter feeding resistive load and full wave converter (M - 2 connection) feeding a resistive load the circuit conditions are similar. The firing angle is a. Then the waveshapes of voltages across thyristors
are similar
are not similar
may be similar or dissimilar
are similar only for some values of a
⇒ Directivity means
maximum directive gain
zero directive gain
minimum directive gain
none of the above
⇒ In a colour TV receiver AFT stands for
Automatic Fine Tuning
Automatic Frequency Tuning
Automatic Field Tuning
Alignment Frequency Tuning
⇒ A TV remote control works on the principle of
pulse code modulated ultra violet light
pulse code modulated infrared light
demodulation
either (a) or (b)
⇒ In a tape recorder the output from RF oscillator is given to
only erase head coil
only record head coil
coils of both erase head and record head
none of the above
⇒ A TEM wave is incident normally on a perfect conductor. The E and H fields at boundary will respectively be
minimum and maximum
minimum and minimum
maximum and minimum
maximum and maximum
⇒ In C-language f- = 9 is equivalent to
f = -9
f = f - 9
f = 9 - 1
-f = 9
⇒ As frequency is increased, the skin effect
increases
decreases
remains the same
either (b) or (c)
⇒ The high voltage level of a digital signal in positive logic is
1
0
either 1 or 0
-1
⇒ Unit of e is __________ .
coulomb/newton-metre
coulomb^{2}/newton-metre
Farad/metre
Farad^{2}/metre
⇒ Consider a parallel plate capacitor being charged. Identify the incorrect statements
Energy stored in the capacitor does not enter it through the connecting wires but through the space around the wires and plates uf capacitor
Rate at which energy flows into this volume is equal to the integration of the Poynting vector over the boundary of the volume between the plates.
The Poynting vector points everywhere radially outward of the volume between the plates
The Poynting vector points everywhere radially into the volume between the plates.
⇒ A communication receiver is
TRF receiver
a superheterodyne receiver
either (a) or (b)
neither (a) nor (b)
⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
G(s) is an all-pass filter
G(s) has a zero in the right-half plane
G(s) is the impedance of a passive network
G(s) is marginally stable
⇒ The correct hierarchy of operations for the operators & &, = = , = , * is
& & , = = , = , *
* , = = , & & , =
* , & & , = = , =
= , & & , = = , *
⇒ In the circuit shown, the power supplied by the voltage so
0 W
5 W
10 W
100 W
⇒ A series circuit has fixed resistance and variable reactance. The impedance locus will be a straight line parallel to Y-axis.
TRUE
FALSE
⇒ Consider the following stateme
1, 2 and 3
1 and 2 only
2, 3 and 4
2, 3 and 4
⇒ Which of the following parameters of CE circuit has the unit of ohms?
h_{ie}
h_{re}
h_{fe}
h_{oe}
⇒ In the given figure the input frequency f = 0.1 (1/2 p
0 dB
3 dB
-3 dB
20 dB
⇒ The nodal method of circuit analysis is based on
KVLs, ohm law
KCLs, ohm law
KCLs, KVL
KCL, KVL, ohms law