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Assertion (A): A dual converter may be circulating current type or non circulating current type. Reason (R): In circulating current dual converter only one converter can be operated at one time. | |
A. | Both A and R are correct and R is correct explanation of A [Wrong Answer] |
B. | Both A and R correct but R is not correct explanation of A [Wrong Answer] |
C. | A is correct but R is wrong [Correct Answer] |
D. | A is wrong but R is correct [Wrong Answer] |
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Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ ∇^{2} is
vector
scalar
depend on direction
none
⇒ The gain of a source follower is unity.
TRUE
FALSE
⇒ A coil has a designed for high Q performance at a rated voltage and a specified frequency. If the frequency of operation is doubled, and the coil is operated at the same rated voltage, then the Q factor and the active power P consumed by the coil will be affected as follows.
P is doubled, Q is halved
P is halved, Q is doubled
P remains constant, Q is doubled
P decreases 4 times, Q is doubled
⇒ The number of inputs and outputs of a full adder are
3 and 2 respectively
2 and 3 respectively
4 and 2 respectively
2 and 4 respectively
⇒ If a function Z(s) has a pole at infinity, then
the degrees of numerator and denominator are equal
the degree of numerator is one higher than that of denominator
the degree of denominator is one higher than that of numerator
the difference between the degrees of numerator and denominator is 0 or 1
⇒ Which of the following amplifiers has highest output impedance?
CE
CB
CC
Push pull
⇒ Logarithmic amplifiers are used in
adders
dividers
multipliers
all of the above
⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system
1 and 3
1 and 4
2 and 4
2 and 3
⇒ A full wave bridge diode rectifier uses diodes having forward resistance of 50 ohms each. The load resistance is also 50 ohms. The voltage regulations is
0.2
0.5
1
2
⇒
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
⇒ The characteristic impedance of coaxial cable is about
1000 ohm
500 ohm
250 ohm
75 ohm
⇒ The distributors for residential areas are
single phase
three phase three wire
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(a) or (b)
⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then
average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A
both the average and rms thyristor currents will be less than 20 A
both the average and rms thyristor currents will be more than 20 A
rms thyristor current will be 20 A and average thyristor current will be 10 A
⇒ The forms of IF statements in FORTRAN 77 are called
logical IF and Block IF
logical IF, block IF and arithmetic IF
logic IF, block IF, arithmetic IF and negate IF
logical IF and arithmetic IF
⇒ In a JFET V_{DS} exceeds the rated value. Then it operates in
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either cut off or active region
⇒ The terminals of a power MOSFET are called
emitter, base, collector
source, gate, drain
source, base, drain
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⇒ When the height of a vertical earthed antenna is less than λ/4
the base input impedance will be capacitive
the base input impedance will be purely resistive
the base input impedance will be inductive
the base input impedance will be negligibly small
⇒ In figure, the capacitor is charged to 1 V. At t = 0 the switch is closed so that i = e^{-t}. When i = 0.37 A, the voltage across capacito
1 V
0.63 V
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0.185 V
⇒ In a series RLC circuit p.f is lagging when f < resonance frequency.
TRUE
FALSE
⇒ Cache memory size is about
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about 500 KB
about 1 MB
about 50 MB
⇒ The forbidden energy gap for germanium is
0.12 eV
0.32 eV
0.72 eV
0.92 eV
⇒ The transconductance curve of a JFET is
a straight line
parabolic
hyperbolic
inverted V-type
⇒
Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ Some types of traps used in video IF amplifier of colour TV are
shunt traps
series traps
absorption traps
all of the above
⇒ The expression
⇒ For an insulating material, dielectric strength and dielectric loss should be respectively
high and high
low and high
high and low
low and low
⇒ Barkhausen criterion is 1 + A_{v}β = 0.
TRUE
FALSE
⇒ For a periodic signal with finite number of discontinuities in each period, at isolated points of discontinuity the series converges to __________ .
difference value of signal on either side of discontinuity
highest value of signal on either side of discontinuity
average value of signal on either side of discontinuity
sum of value of signal on either side of discontinuity
⇒ x = AX + Bu is a state equation.
TRUE
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⇒
Assertion (A): A class C amplifier can also be used as frequency multiplier
Reason (R): When narrow current pulses drive a resonant circuit the output can be a near perfect sine wave
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ ∇^{2} is
vector
scalar
depend on direction
none
⇒ The gain of a source follower is unity.
TRUE
FALSE
⇒ A coil has a designed for high Q performance at a rated voltage and a specified frequency. If the frequency of operation is doubled, and the coil is operated at the same rated voltage, then the Q factor and the active power P consumed by the coil will be affected as follows.
P is doubled, Q is halved
P is halved, Q is doubled
P remains constant, Q is doubled
P decreases 4 times, Q is doubled
⇒ The number of inputs and outputs of a full adder are
3 and 2 respectively
2 and 3 respectively
4 and 2 respectively
2 and 4 respectively
⇒ If a function Z(s) has a pole at infinity, then
the degrees of numerator and denominator are equal
the degree of numerator is one higher than that of denominator
the degree of denominator is one higher than that of numerator
the difference between the degrees of numerator and denominator is 0 or 1
⇒ Which of the following amplifiers has highest output impedance?
CE
CB
CC
Push pull
⇒ Logarithmic amplifiers are used in
adders
dividers
multipliers
all of the above
⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system
- [5 - 4 e^{-2t}] u(t)
- [e^{-2t} + 5] u(t)
- d(t) + 8 e^{-2t} u(t)
- d(t) + 4 e^{-2t} u(t)
1 and 3
1 and 4
2 and 4
2 and 3
⇒ A full wave bridge diode rectifier uses diodes having forward resistance of 50 ohms each. The load resistance is also 50 ohms. The voltage regulations is
0.2
0.5
1
2
⇒
Assertion (A): A p-n junction is used as rectifier.
Reason (R): A p-n junction has low resistance in forward direction and high resistance in reverse direction.
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
⇒ The characteristic impedance of coaxial cable is about
1000 ohm
500 ohm
250 ohm
75 ohm
⇒ The distributors for residential areas are
single phase
three phase three wire
three phase 4 wire
(a) or (b)
⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then
average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A
both the average and rms thyristor currents will be less than 20 A
both the average and rms thyristor currents will be more than 20 A
rms thyristor current will be 20 A and average thyristor current will be 10 A
⇒ The forms of IF statements in FORTRAN 77 are called
logical IF and Block IF
logical IF, block IF and arithmetic IF
logic IF, block IF, arithmetic IF and negate IF
logical IF and arithmetic IF
⇒ In a JFET V_{DS} exceeds the rated value. Then it operates in
active region
ohmic region
cut off region
either cut off or active region
⇒ The terminals of a power MOSFET are called
emitter, base, collector
source, gate, drain
source, base, drain
emitter, gate, drain
⇒ When the height of a vertical earthed antenna is less than λ/4
the base input impedance will be capacitive
the base input impedance will be purely resistive
the base input impedance will be inductive
the base input impedance will be negligibly small
⇒ In figure, the capacitor is charged to 1 V. At t = 0 the switch is closed so that i = e^{-t}. When i = 0.37 A, the voltage across capacito
1 V
0.63 V
0.37 V
0.185 V
⇒ In a series RLC circuit p.f is lagging when f < resonance frequency.
TRUE
FALSE
⇒ Cache memory size is about
a few KB
about 500 KB
about 1 MB
about 50 MB
⇒ The forbidden energy gap for germanium is
0.12 eV
0.32 eV
0.72 eV
0.92 eV
⇒ The transconductance curve of a JFET is
a straight line
parabolic
hyperbolic
inverted V-type
⇒
Assertion (A): There are no convergence issues with the discrete-time Fourier series in general.
Reason (R): A discrete-time signal is always obtained by sampling a continuous-time signal.
Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ Some types of traps used in video IF amplifier of colour TV are
shunt traps
series traps
absorption traps
all of the above
⇒ The expression
A^{2} + B^{2} - 3 AB
when written is Pascal should be written asA * A + B * B - 3 A * B
A * A + B * B - 3.0 A * B
A * A + B * B - 3.0 * A * B
A * A + B * A - 3 * A * B
⇒ For an insulating material, dielectric strength and dielectric loss should be respectively
high and high
low and high
high and low
low and low
⇒ Barkhausen criterion is 1 + A_{v}β = 0.
TRUE
FALSE
⇒ For a periodic signal with finite number of discontinuities in each period, at isolated points of discontinuity the series converges to __________ .
difference value of signal on either side of discontinuity
highest value of signal on either side of discontinuity
average value of signal on either side of discontinuity
sum of value of signal on either side of discontinuity
⇒ x = AX + Bu is a state equation.
TRUE
FALSE