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 demultiplexer cannot be used as a decoder Reason (R): A multiplexer selects one of many outputs whereas a decoder selects on output corresponding to coded input. | |
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 [Wrong Answer] |
C. | A is true, R is false [Wrong Answer] |
D. | A is false, R is true [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A constant k high pass p section has a characteristic impedance of 300 Ω at f = ∞ . At f = f_{c}, the characteristic impedance will be
zero
∞
300 Ω
more than 300 Ω
⇒ If 137 + 276 = 435 how much is 731 + 672?
534
1403
1623
1513
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ Polar plot of a lag-lead compensator is a circle.
TRUE
FALSE
⇒ The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage E_{s}, the rms value of the source voltage e_{s10 volt2 voltEs5 volt}
⇒ The initial state of MOD-16 down counter is 0110. What state will it be after 37 clock pulses?
Indeterminate
110
101
1
⇒ A 4 bit synchronous counter uses flip flops with a delay time of 15 ns each. The time required for change of state is
15 ns
30 ns
45 ns
60 ns
⇒ In a minimum function
the degree of numerator is higher than that of denominator
the degree of numerator is lower than that of denominator
the degree of numerator and denominator are equal
the denominator is a constant
⇒ Efficiency of a half wave diode rectifier is less than 40%.
TRUE
FALSE
⇒ A pulse transformer uses
ferrite core
air core
iron core
copper core
⇒ In a single phase cycloconverter with centre tapped transformer
all thyristors carry currents for equal duration
the durations of currents in all thyristors may or may not be equal
the durations of currents in all thyristors cannot be equal
the duration of currents in all thyristors must be equal for satisfactory operation
⇒ Two ammeters A and B both 0-10 A have internal resistance of 1 Ω and 0.5 Ω respectively. They are connected in parallel. If total current is 15 A, then
I_{A} = I_{B} = 7.5 A
I_{A} = 5 A, I_{B} = 10 A
I_{A} = 10 A, I_{B} = 5 A
I_{A} = 9 A, I_{B} = 6 A
⇒ In degenerate p type semiconductor material, the Fermi level,
is in the valence band
is in conduction band
is at the centre in between valence and conduction bands
is very near conduction band
⇒ Which of following digital modulation technique?
ASK
FSK
PSK
All
⇒ In a semi converter feeding a resistive load
the waveshapes of output voltage and output current are exactly similar
the waveshapes of output voltage and output current can not be similar
the waveshapes of output voltage and output current are similar only for low values of firing angle
the waveshapes of output voltage and output current may be similar or dissimilar
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ In a power amplifier the collector current flows for 270° of the input cycle. The operations is
class A
class B
class AB
class C
⇒ Consider the following statements for 8085
all
1, 2 and 3 only
2, 3 and 4 only
1, 3 and 4 only
⇒ Laplacian of a scalar function V is
gradient of V
gradient of the gradient of V
divergence of V
divergence of the gradient of V
⇒ The spectral component of noise associated with k^{th} frequency is given, in the limit as Δf → 0 by n_{k}(t) written as n_{k}(t) = C_{k} cos (2pk Δft + θ_{k1, 2 only1, 3 only1, 2, 32, 3 only}
⇒ When iron rod is magnetised by the flowing through its coil, the polarities of its different points wil
Pole A is N-pole, B is S-pole and C is neutral
A is N, B and C is S
A is N, C is S
A is S, C is neutral, B is N
⇒ TTL is used in electronic calculators.
TRUE
FALSE
⇒ Some multiplexing arrangements for telephone system are
1 only
2 and 3 only
1, 2, 3
1 and 3 only
⇒
A-4, B-2, C-3, D-1
A-2, B-4, C-1, D-3
A-2, B-4, C-3, D-1
A-4, B-2, C-1, D-3
⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here u(t) is the unit step function) x(t) = 125t (u(t) - u(t - 1)) + (250 - 125t) (u(t - 1) - u(t - 2)) So that slope overload is avoided, would be
2^{-10}
2^{-8}
2^{-6}
2^{-4}
⇒ Due to which of the following reasons, the ground wave eventually disappears, as one moves away from the transmitter?
Tilting
Loss of line-of-eight conditions
Interference from the sky wave
Maximum single hop distance limitation
⇒ The output of the 74 series of TTL gates is taken from a BST in
totem pole and common collector configuration
either totem pole or open collector configuration
common base configuration
common collector configuration
⇒ A single phase full wave regulator feeds R-L load. The best gating signal is
short duration pulses
long duration pulses
pulse train
either (a) or (b)
⇒ Consider the following statements
All
1 and 2 only
1 and 3 only
2 and 3 only
⇒ A 10 bit D/A converter gives a maximum output of 10.23 V. The resolution is
10 mV
20 mV
15 mV
25 mV
⇒ A constant k high pass p section has a characteristic impedance of 300 Ω at f = ∞ . At f = f_{c}, the characteristic impedance will be
zero
∞
300 Ω
more than 300 Ω
⇒ If 137 + 276 = 435 how much is 731 + 672?
534
1403
1623
1513
⇒
Assertion (A): A ballistic galvanometer is used to measure charge.
Reason (R): In a flux meter, the damping is large.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ Polar plot of a lag-lead compensator is a circle.
TRUE
FALSE
⇒ The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage E_{s}, the rms value of the source voltage e_{s10 volt2 voltEs5 volt}
⇒ The initial state of MOD-16 down counter is 0110. What state will it be after 37 clock pulses?
Indeterminate
110
101
1
⇒ A 4 bit synchronous counter uses flip flops with a delay time of 15 ns each. The time required for change of state is
15 ns
30 ns
45 ns
60 ns
⇒ In a minimum function
the degree of numerator is higher than that of denominator
the degree of numerator is lower than that of denominator
the degree of numerator and denominator are equal
the denominator is a constant
⇒ Efficiency of a half wave diode rectifier is less than 40%.
TRUE
FALSE
⇒ A pulse transformer uses
ferrite core
air core
iron core
copper core
⇒ In a single phase cycloconverter with centre tapped transformer
all thyristors carry currents for equal duration
the durations of currents in all thyristors may or may not be equal
the durations of currents in all thyristors cannot be equal
the duration of currents in all thyristors must be equal for satisfactory operation
⇒ Two ammeters A and B both 0-10 A have internal resistance of 1 Ω and 0.5 Ω respectively. They are connected in parallel. If total current is 15 A, then
I_{A} = I_{B} = 7.5 A
I_{A} = 5 A, I_{B} = 10 A
I_{A} = 10 A, I_{B} = 5 A
I_{A} = 9 A, I_{B} = 6 A
⇒ In degenerate p type semiconductor material, the Fermi level,
is in the valence band
is in conduction band
is at the centre in between valence and conduction bands
is very near conduction band
⇒ Which of following digital modulation technique?
ASK
FSK
PSK
All
⇒ In a semi converter feeding a resistive load
the waveshapes of output voltage and output current are exactly similar
the waveshapes of output voltage and output current can not be similar
the waveshapes of output voltage and output current are similar only for low values of firing angle
the waveshapes of output voltage and output current may be similar or dissimilar
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ In a power amplifier the collector current flows for 270° of the input cycle. The operations is
class A
class B
class AB
class C
⇒ Consider the following statements for 8085
- The most significant 8 bits of address are transmitted on the 8 lines on which data is transmitted.
- Eight pins are dedicated to transmit the most significant 8 bits of memory address.
- The least significant 8 bits of address are transmitted on the lines on which data is transmitted.
- The data and leass significant 8 bits are transmitted at different points in time.
all
1, 2 and 3 only
2, 3 and 4 only
1, 3 and 4 only
⇒ Laplacian of a scalar function V is
gradient of V
gradient of the gradient of V
divergence of V
divergence of the gradient of V
⇒ The spectral component of noise associated with k^{th} frequency is given, in the limit as Δf → 0 by n_{k}(t) written as n_{k}(t) = C_{k} cos (2pk Δft + θ_{k1, 2 only1, 3 only1, 2, 32, 3 only}
⇒ When iron rod is magnetised by the flowing through its coil, the polarities of its different points wil
Pole A is N-pole, B is S-pole and C is neutral
A is N, B and C is S
A is N, C is S
A is S, C is neutral, B is N
⇒ TTL is used in electronic calculators.
TRUE
FALSE
⇒ Some multiplexing arrangements for telephone system are
- Space multiplexing
- Time division multiplexing
- Frequency division multiplexing
1 only
2 and 3 only
1, 2, 3
1 and 3 only
⇒
Match the following:
List I (Antenna) | List II (Communication system) | ||
---|---|---|---|
A. | Turnstile | 1. | Radar |
B. | Yagi | 2. | TV transmission |
C. | Dish | 3. | MW broadcasting |
D. | Vertical mast | 4. | TV reception |
A-4, B-2, C-3, D-1
A-2, B-4, C-1, D-3
A-2, B-4, C-3, D-1
A-4, B-2, C-1, D-3
⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here u(t) is the unit step function) x(t) = 125t (u(t) - u(t - 1)) + (250 - 125t) (u(t - 1) - u(t - 2)) So that slope overload is avoided, would be
2^{-10}
2^{-8}
2^{-6}
2^{-4}
⇒ Due to which of the following reasons, the ground wave eventually disappears, as one moves away from the transmitter?
Tilting
Loss of line-of-eight conditions
Interference from the sky wave
Maximum single hop distance limitation
⇒ The output of the 74 series of TTL gates is taken from a BST in
totem pole and common collector configuration
either totem pole or open collector configuration
common base configuration
common collector configuration
⇒ A single phase full wave regulator feeds R-L load. The best gating signal is
short duration pulses
long duration pulses
pulse train
either (a) or (b)
⇒ Consider the following statements
- The sign of a floating point number depends on the sign of mantissa only.
- If the absolute value of a number is less than 1, the sign of exponent is zero or positive.
- With sign bit of mantissa as 0, increasing the exponent from a positive to a more positive value gives a larger floating point number.
All
1 and 2 only
1 and 3 only
2 and 3 only
⇒ A 10 bit D/A converter gives a maximum output of 10.23 V. The resolution is
10 mV
20 mV
15 mV
25 mV