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): Ideal current sources and ideal voltage sources do not exist in reality. Reason (R): All sources have finite internal impedances. | |
A. | Both A and R are individually true and R is the correct explanation of A [Correct Answer] |
B. | Both A and R are individually true but R is not the correct explanation of A [Wrong Answer] |
C. | A is true but R is false [Wrong Answer] |
D. | A is false but R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The impulse response h(t) of a linear time-invariant continuous time system is described by h(t) = exp (at) u(t) + exp (βt) u (- t), where u(t) denotes the unit step function, and a and β are constants. This system is stable if
a is positive and β is positive
a is negative and β is negative
a is positive and β is negative
a is negative and β is positive
⇒ Which of the following statement is false?
Television signals are propagated as ground waves
Surface waves can propagate on piezoelectric substrates
The skip distance is the maximum distance upto which ionospheric reflection is possible
Tropospheric scatter propagation is always subjects to fading
⇒ Out of S, R, J, K, Preset, Clear inputs to flip flops, the synchronous inputs are
S, R, J, K only
S, R, Preset, Clear only
Preset, Clear only
S, R only
⇒ The accuracy of a multimeter is about
± 0.5%
± 3%
± 0.01%
± 10%
⇒ The bandwidth required for amplitude modulation is
half the frequency of modulating signal
equal to the frequency of modulating signal
twice the frequency of modulating signal
four times the frequency of modulating signal
⇒ To avoid the effect of stray magnetic fields in ac bridge we can use
magnetic screening
Wagner earthing device
wave filter
transformer
⇒ In using mesh current method it is necessary that at least one mesh current links every element.
TRUE
FALSE
⇒ A typical value of g_{m} for a FET is about 25 μs.
TRUE
FALSE
⇒ The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about
100°
50°
5°
2°
⇒ 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
⇒ An 8-bit microprocessor has 16 bit address bus A_{0} - A_{15}. The processor addresses a 1-K byte memory chip as shown. The address range for the chi
(F00F)_{H} TO (F40E)_{H}
(F000)_{H} TO (F3FF)_{H}
(F100)_{H} TO (F4FF)_{H}
(F700)_{H} TO (FAFF)_{H}
⇒ The voltage e_{0} in the fi
48 V
24 V
36 V
28 V
⇒ A single phase fully controlled bridge rectifier is fed by a source having inductance. The output voltage during overlap period is
V_{m}
0.5 V_{m}
zero
0.5 V_{m} - voltage drop across inductance
⇒ Which of the following op-amp circuits has zero resistance in the feedback path?
Inverting amplifier
Summing amplifier
Source follower
Integrating amplifier
⇒ Impedance Z as shown in the given figur
j29 Ω
j9 Ω
j19 Ω
j35 Ω
⇒ For a transistor if a_{dc} = 0.98 and emitter current I_{E} is 2 mA, then base current will be
10 μA
40 μA
80 μA
200 μA
⇒ The maximum number of characters for variable names in C is
4
8
12
16
⇒ When determining Thevenin's resistance of a circuit
all sources must be open circuited
all sources must be short circuited
all voltages sources must be open circuited and all current sources must be short circuited
all sources must be replaced by their internal resistances
⇒ The resonance frequency of the circui
5.4 Kn_{2}
4.5 Kn_{2}
5 Kn_{2}
∞
⇒ Consider a situation where number of minterms with even number of 0's are same as number of minterms with odd number of 1's. Then minterms with even number of 0's and minterms with odd number of 1's are __________ to each other then number of variables is __________ .
equivalent, even
complement, odd
complement, even
none of these
⇒ If the frequency of a wave 20 Hz, the time period is
20 secs
2 secs
0.2 secs
0.05 secs
⇒ In figure the voltage distribution on a vertical earthed antenna is represented
curve A
curve B
curve C
curve D
⇒ How many zone bits are th
2
4
8
16
⇒ There are four different algorithms A1, A2, A3 and A4 to solve, a given problem with the complexity order log(n), log(log(n)), n log and n/log(n) respectively. Which is the best algorithm?
A1
A2
A3
A4
⇒ In FM, the frequency deviation is
always constant
directly proportional to modulating frequency
inversely proportional to modulating frequency
proportional to amplitude of modulating signal
⇒ Consider a control system shown in given figure. For slight variation in G, the ratio of open loop sensitivity to closed loop sensitivity will be give
1 : (1 + GH)
1 : (1 + GH)^{- 1}
1 : (1 - GH)
1 : (1 - GH)^{- 1}
⇒ Binary 1111 when added to binary 11111, the result in binary is
111111
1111
1000
10000
⇒ In 8085, the pins for SID and SOD are
4 and 5 respectively
5 and 4 respectively
3 and 4 respectively
4 and 3 respectively
⇒ In MTI radar, clutter means
echos from moving targets
echos from stationary targets
atmospheric noise
thermal noise
⇒ If W_{F} is the Fermi level, then in a metal at T = 0
all energy levels above W_{F} filled, all those below W_{F} are empty
all energy levels below W_{F} are filled, all those above W_{F} are empty
some energy levels, both below and above W_{F}, are filled
all energy levels below and above W_{F} are filled
⇒ The impulse response h(t) of a linear time-invariant continuous time system is described by h(t) = exp (at) u(t) + exp (βt) u (- t), where u(t) denotes the unit step function, and a and β are constants. This system is stable if
a is positive and β is positive
a is negative and β is negative
a is positive and β is negative
a is negative and β is positive
⇒ Which of the following statement is false?
Television signals are propagated as ground waves
Surface waves can propagate on piezoelectric substrates
The skip distance is the maximum distance upto which ionospheric reflection is possible
Tropospheric scatter propagation is always subjects to fading
⇒ Out of S, R, J, K, Preset, Clear inputs to flip flops, the synchronous inputs are
S, R, J, K only
S, R, Preset, Clear only
Preset, Clear only
S, R only
⇒ The accuracy of a multimeter is about
± 0.5%
± 3%
± 0.01%
± 10%
⇒ The bandwidth required for amplitude modulation is
half the frequency of modulating signal
equal to the frequency of modulating signal
twice the frequency of modulating signal
four times the frequency of modulating signal
⇒ To avoid the effect of stray magnetic fields in ac bridge we can use
magnetic screening
Wagner earthing device
wave filter
transformer
⇒ In using mesh current method it is necessary that at least one mesh current links every element.
TRUE
FALSE
⇒ A typical value of g_{m} for a FET is about 25 μs.
TRUE
FALSE
⇒ The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about
100°
50°
5°
2°
⇒ 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
⇒ An 8-bit microprocessor has 16 bit address bus A_{0} - A_{15}. The processor addresses a 1-K byte memory chip as shown. The address range for the chi
(F00F)_{H} TO (F40E)_{H}
(F000)_{H} TO (F3FF)_{H}
(F100)_{H} TO (F4FF)_{H}
(F700)_{H} TO (FAFF)_{H}
⇒ The voltage e_{0} in the fi
48 V
24 V
36 V
28 V
⇒ A single phase fully controlled bridge rectifier is fed by a source having inductance. The output voltage during overlap period is
V_{m}
0.5 V_{m}
zero
0.5 V_{m} - voltage drop across inductance
⇒ Which of the following op-amp circuits has zero resistance in the feedback path?
Inverting amplifier
Summing amplifier
Source follower
Integrating amplifier
⇒ Impedance Z as shown in the given figur
j29 Ω
j9 Ω
j19 Ω
j35 Ω
⇒ For a transistor if a_{dc} = 0.98 and emitter current I_{E} is 2 mA, then base current will be
10 μA
40 μA
80 μA
200 μA
⇒ The maximum number of characters for variable names in C is
4
8
12
16
⇒ When determining Thevenin's resistance of a circuit
all sources must be open circuited
all sources must be short circuited
all voltages sources must be open circuited and all current sources must be short circuited
all sources must be replaced by their internal resistances
⇒ The resonance frequency of the circui
5.4 Kn_{2}
4.5 Kn_{2}
5 Kn_{2}
∞
⇒ Consider a situation where number of minterms with even number of 0's are same as number of minterms with odd number of 1's. Then minterms with even number of 0's and minterms with odd number of 1's are __________ to each other then number of variables is __________ .
equivalent, even
complement, odd
complement, even
none of these
⇒ If the frequency of a wave 20 Hz, the time period is
20 secs
2 secs
0.2 secs
0.05 secs
⇒ In figure the voltage distribution on a vertical earthed antenna is represented
curve A
curve B
curve C
curve D
⇒ How many zone bits are th
2
4
8
16
⇒ There are four different algorithms A1, A2, A3 and A4 to solve, a given problem with the complexity order log(n), log(log(n)), n log and n/log(n) respectively. Which is the best algorithm?
A1
A2
A3
A4
⇒ In FM, the frequency deviation is
always constant
directly proportional to modulating frequency
inversely proportional to modulating frequency
proportional to amplitude of modulating signal
⇒ Consider a control system shown in given figure. For slight variation in G, the ratio of open loop sensitivity to closed loop sensitivity will be give
1 : (1 + GH)
1 : (1 + GH)^{- 1}
1 : (1 - GH)
1 : (1 - GH)^{- 1}
⇒ Binary 1111 when added to binary 11111, the result in binary is
111111
1111
1000
10000
⇒ In 8085, the pins for SID and SOD are
4 and 5 respectively
5 and 4 respectively
3 and 4 respectively
4 and 3 respectively
⇒ In MTI radar, clutter means
echos from moving targets
echos from stationary targets
atmospheric noise
thermal noise
⇒ If W_{F} is the Fermi level, then in a metal at T = 0
all energy levels above W_{F} filled, all those below W_{F} are empty
all energy levels below W_{F} are filled, all those above W_{F} are empty
some energy levels, both below and above W_{F}, are filled
all energy levels below and above W_{F} are filled