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A. | TRUE [Correct Answer] |
B. | FALSE [Wrong Answer] |
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Also Read Similar Questions Below :
⇒ A transmission line discontinuity is defined as any interruption in the uniformity of the line.
TRUE
FALSE
⇒ In microwave circuits, a mode transducer is used to
change mode of wave transmission
change direction of wave transmission
change polarization of wave transmission
change mode, direction or polarization wave transmission
⇒ If the ladder reference voltage is 2 V, then minimum comparator resolution required is
0.125 V
1.25 V
12.5 V
0
⇒ In a current transformers
the number of turns in primary and secondary windings are nearly equal
the number of primary turns is very small as compared to number of secondary turns.
the number of secondary turns is very small as compared to the number of primary turns
either (a) or (c).
⇒ For a P-N junction diode, the current in reverse bias may be
few amperes
between 0.5 A and 1 A
few milliamperes
few micro or nanoamperes
⇒ Both Impatt and Trapatt devices use avalanche effect
TRUE
FALSE
⇒ The modulating frequency in frequency modulation is increased from 10 kHz to 30 kHz. The bandwidth is increased by
6
1/6 times
increase by 30 kHz
increase by 20 kHz
⇒ A step up chopper can give an output voltage
higher than input voltage
lower than input voltage
both higher and lower input voltage
all of the above
⇒ The normalised form of 0.0152 x 10^{18} is
0.152 x 10^{17}
1.52 x 10^{16}
15.2 x 10^{15}
152 x 10^{14}
⇒ The external magnetic field in a magnetron is such that lines are
parallel to the axis of cathode
perpendicular to the axis of cathode
inclined to the axis of cathode
either (b) or (c)
⇒ For the switch circuit, taking open as 0 and closed as 1, the expression for the circuit is Y. Y is give
A + (B + C) D
A + BC + D
A(BC + D)
none of these
⇒ For the block diagram of the given figure, the equation describing system dynamic
(1 + RCs) Δθ_{0}(s) = Δθ_{i}(s) + R Δ H(s)
(1 + RCs) [ΔH(s)] = Δθ(s) - Δθ_{0}(s)
(1 + RCs) Δθ_{0}(s) = RΔ H(s) - Δ θ_{i}(s)
(1 + RCs) Δθ_{i}(s) = Δ H(s)[R] - Δθ_{0}(s)
⇒
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
⇒ The Boolean function realized by the logic circuit show
F = Σm(0, 1, 3, 5, 9, 10, 14)
F = Σm(2, 3, 5, 7, 8, 12, 13)
F = Σm(1, 2, 4, 5, 11, 14, 15)
F = Σm(2, 3, 5, 7, 8, 9, 12)
⇒ The loss of charge method can be used to measure
resistance of shunt
insulation resistance of cable
resistance of shunt winding
both (b) and (c)
⇒ If Laplace transform of f(t) is F(s), then £ f(t - a) u (t - a)= 0
e^{as} F(s)
e^{-as} F(s)
- e^{as} F(s)
- e ^{-as} F(s)
⇒ The polar plot of a transfer function passes through (-1, 0) point. The gain margin is
zero
- 1 dB
1 dB
infinity
⇒ Transient current in a loss free LC circuit when excited from an ac source is an __________ sine wave.
undamped
over damped
under damped
critically damped
⇒ The product of which of the following gives the figure of merit of a logic family?
Gain and bandwidth
Propagation delay time and power dissipation
Fan-out and propagation delay time
Noise margin and power dissipation
⇒ The transistor of following figure in Si diode with a base current of 40 μA and I_{CBO} = 0, if V_{BB} = 6V, R_{E} = 2 kΩ and β = 90, I_{BQ} = 20 μA then I_{EQ1800 μA180 μA2000 μA3000 μA}
⇒ In hexadecimal number system, A is equal to decimal number
10
11
17
18
⇒ In a semiconductor strain gauge, the ohmic electrical contacts are generally made of
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⇒ A signal m(t) with bandwidth 500 Hz is first multiplied by a signal g(t) w
δ(t)
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⇒ In ferromagnetic materials, the orientation between neighbouring permanent dipoles is parallel.
TRUE
FALSE
⇒ Which of the following theorems can be conveniently used to find power consumed in 10 Ω resistor in fig
Thevenin theorem
Maximum power transfer theorem
Millman's theorem
Superposition theorem
⇒ The minimum sampling frequency in sample/sec. required to reconstruct the following signal from its samples wuthout distor
2 x 10^{3}
4 x 10^{3}
6 x 10^{3}
8 x 10^{3}
⇒ Low frequency boost can be easily compensated by
attenuating the frequencies from 0 to 1.25 MHz
using an appropriate de-emphasis circuit in the receiver
using an appropriate pre-emphasis circuit in the transmitter
none
⇒ Algebraic expression for z-transform of x[n] is X[z]... What is the algebraic expression of z-transform of e^{jω0n} x[n]?
X(Z - Z_{0})
X(e^{-jW0z})
X(e^{jω0z})
X(Z)^{jω0z}
⇒ The main advantage of a crystal oscillator
can oscillate any frequency
gives a high output voltage
frequency of oscillation is almost constant
can operates at a low dc voltage
⇒ The factor η for a UJT is about
0.1
0.2
0.6
0.9
⇒ A transmission line discontinuity is defined as any interruption in the uniformity of the line.
TRUE
FALSE
⇒ In microwave circuits, a mode transducer is used to
change mode of wave transmission
change direction of wave transmission
change polarization of wave transmission
change mode, direction or polarization wave transmission
⇒ If the ladder reference voltage is 2 V, then minimum comparator resolution required is
0.125 V
1.25 V
12.5 V
0
⇒ In a current transformers
the number of turns in primary and secondary windings are nearly equal
the number of primary turns is very small as compared to number of secondary turns.
the number of secondary turns is very small as compared to the number of primary turns
either (a) or (c).
⇒ For a P-N junction diode, the current in reverse bias may be
few amperes
between 0.5 A and 1 A
few milliamperes
few micro or nanoamperes
⇒ Both Impatt and Trapatt devices use avalanche effect
TRUE
FALSE
⇒ The modulating frequency in frequency modulation is increased from 10 kHz to 30 kHz. The bandwidth is increased by
6
1/6 times
increase by 30 kHz
increase by 20 kHz
⇒ A step up chopper can give an output voltage
higher than input voltage
lower than input voltage
both higher and lower input voltage
all of the above
⇒ The normalised form of 0.0152 x 10^{18} is
0.152 x 10^{17}
1.52 x 10^{16}
15.2 x 10^{15}
152 x 10^{14}
⇒ The external magnetic field in a magnetron is such that lines are
parallel to the axis of cathode
perpendicular to the axis of cathode
inclined to the axis of cathode
either (b) or (c)
⇒ For the switch circuit, taking open as 0 and closed as 1, the expression for the circuit is Y. Y is give
A + (B + C) D
A + BC + D
A(BC + D)
none of these
⇒ For the block diagram of the given figure, the equation describing system dynamic
(1 + RCs) Δθ_{0}(s) = Δθ_{i}(s) + R Δ H(s)
(1 + RCs) [ΔH(s)] = Δθ(s) - Δθ_{0}(s)
(1 + RCs) Δθ_{0}(s) = RΔ H(s) - Δ θ_{i}(s)
(1 + RCs) Δθ_{i}(s) = Δ H(s)[R] - Δθ_{0}(s)
⇒
Assertion (A): The main use of Miller integrator is to generate ramp
Reason (R): An inverting amplifier can handle more than one input at the same time.
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
⇒ The Boolean function realized by the logic circuit show
F = Σm(0, 1, 3, 5, 9, 10, 14)
F = Σm(2, 3, 5, 7, 8, 12, 13)
F = Σm(1, 2, 4, 5, 11, 14, 15)
F = Σm(2, 3, 5, 7, 8, 9, 12)
⇒ The loss of charge method can be used to measure
resistance of shunt
insulation resistance of cable
resistance of shunt winding
both (b) and (c)
⇒ If Laplace transform of f(t) is F(s), then £ f(t - a) u (t - a)= 0
e^{as} F(s)
e^{-as} F(s)
- e^{as} F(s)
- e ^{-as} F(s)
⇒ The polar plot of a transfer function passes through (-1, 0) point. The gain margin is
zero
- 1 dB
1 dB
infinity
⇒ Transient current in a loss free LC circuit when excited from an ac source is an __________ sine wave.
undamped
over damped
under damped
critically damped
⇒ The product of which of the following gives the figure of merit of a logic family?
Gain and bandwidth
Propagation delay time and power dissipation
Fan-out and propagation delay time
Noise margin and power dissipation
⇒ The transistor of following figure in Si diode with a base current of 40 μA and I_{CBO} = 0, if V_{BB} = 6V, R_{E} = 2 kΩ and β = 90, I_{BQ} = 20 μA then I_{EQ1800 μA180 μA2000 μA3000 μA}
⇒ In hexadecimal number system, A is equal to decimal number
10
11
17
18
⇒ In a semiconductor strain gauge, the ohmic electrical contacts are generally made of
copper wire
gold wire
aluminium wire
nickel wire
⇒ A signal m(t) with bandwidth 500 Hz is first multiplied by a signal g(t) w
δ(t)
m(t)
0
m(t) δ(t)
⇒ In ferromagnetic materials, the orientation between neighbouring permanent dipoles is parallel.
TRUE
FALSE
⇒ Which of the following theorems can be conveniently used to find power consumed in 10 Ω resistor in fig
Thevenin theorem
Maximum power transfer theorem
Millman's theorem
Superposition theorem
⇒ The minimum sampling frequency in sample/sec. required to reconstruct the following signal from its samples wuthout distor
2 x 10^{3}
4 x 10^{3}
6 x 10^{3}
8 x 10^{3}
⇒ Low frequency boost can be easily compensated by
attenuating the frequencies from 0 to 1.25 MHz
using an appropriate de-emphasis circuit in the receiver
using an appropriate pre-emphasis circuit in the transmitter
none
⇒ Algebraic expression for z-transform of x[n] is X[z]... What is the algebraic expression of z-transform of e^{jω0n} x[n]?
X(Z - Z_{0})
X(e^{-jW0z})
X(e^{jω0z})
X(Z)^{jω0z}
⇒ The main advantage of a crystal oscillator
can oscillate any frequency
gives a high output voltage
frequency of oscillation is almost constant
can operates at a low dc voltage
⇒ The factor η for a UJT is about
0.1
0.2
0.6
0.9