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Sound waves are electromagnetic waves. | |
A. | TRUE [Wrong Answer] |
B. | FALSE [Correct Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ If one wants to design a binary counter, preferred type of flip-flop is
D-type
SR type
Latch
JK type
⇒ A thyristor has its gate current zero. To start conduction the forward voltage must exceed
about 0.5 V
forward breakover voltage
on state voltage
peak working off state forward voltage
⇒ RS latch can be built with
NOR gates
NAND gates
NOR or NAND gates
none of the above
⇒ Study the circuit of figure and examine the following statem
1, 2 and 3
1 and 2
1 and 3
2 and 3
⇒ In amplitude modulation, the magnitude of side bands is
ma/2 times the carrier amplitude, E_{c}
ma times the carrier amplitude, E_{c}
2ma times the carrier amplitude, E_{c}
4ma times the carrier amplitude, E_{c}
⇒
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 correct but R is wrong
A is wrong but R is correct
⇒ In figure, R = 20KΩ and C = 75 pF. The converter clock frequency wil
606 Hz
1212 Hz
555 KHz
606 KHz
⇒ Consider the following program in Pascal2
2.6
2.63
26.3
⇒ The expression Y (A, B, C) = ∑m (1, 3, 5, 6) is to realized using a multiplexer. Then
use 8 : 1 multiplexer and ground input lines 1, 3, 5, 6
use 8 : 1 multiplexer and ground input lines 0, 2, 4, 7
use 8 : 1 multiplexer and ground input lines 0, 1, 2, 3
use 8 : 1 multiplexer and ground input lines 4, 5, 6, 7
⇒ Depending on the technique used, digitized television requires a bit rate between __________ millions.
40 and 92.5
25 and 60
30 and 82.5
2
⇒ The scaling factor of an MOS device using constant voltage scaling model, the gate area of the device will be scaled as
1/a
1/a^{2}
1/a^{3}
1/a^{4}
⇒ Poynting vector is associated with which of the following?
Power flow in electromagnetic
Flux in magnetic field
Charge in electrostatic field
Current in electrostatic field
⇒ If f_{h}(t) is Hilbert transform of f(t), then Hilbert transform of f_{h}(t) is
-f(t)
+f(t)
f^{2}(t)
f(t)
⇒ Find the number of loop equation and number of possible trees for the given gr
7, 2097152
7, 262144
7.5764801
6, 823543
⇒ Which of the following theorems enables a number of voltage (or current) sources to be combined directly into a single voltage (or current) source?
Superposition theorem
Compensation theorem
Millman's theorem
Thevenin's theorem
⇒ The two pressure coils in a single phase power factor meter of turns
the same dimension and the same numbers of turns
the same dimension but different number of turns
different dimension and different numbers of turns
different dimension but the same numbers of turns
⇒ The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback would be.
0.4
0.05
0.2
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⇒ Which of the following operation are performed on linear queues?
1, 2 and 3
2, 3 and 4
1, 3 and 4
1, 2, 3 and 4
⇒
A-1, B-4, C-2
A-2, B-3, C-4
A-3, B-1, C-4
A-1, B-3, C-2
⇒ The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be
1011
1101
1100
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⇒ A sphere with charge Q was placed in, but not touching a larger hollow sphere. If there is any charge initially on the outer sphere; to remove it the outer sphere was earthed momentarily, and then the inner sphere was removed. The charge remaining on the outer sphere was then measured. This charge was found to be __________ to the charge on the inner sphere.
equal and of same again
equal and of opposite sign
unequal and of same sign
unequal and of opposite sign
⇒ The usable bandwidth of ridge wave guide
is lower than that of rectangular waveguide
is higher than that of rectangular waveguide
is almost same as that of rectangular waveguide
is very small as compared to that of rectangular waveguide
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DTL
TTL
ECL
⇒ An RC driving point impedance function has zeros at s = - 2 and s = - 5. The admissible poles are
s = 0 and s = -6
s = -1 and s = -3
s = 0 and s = -1
s = -3 and s = -4
⇒ In a tungsten filament lamp
the current at the instant of switching is less than operating current
the current at the instant of switching is more than operating current
the current at the instant of switching is equal to operating current
the current at the instant of switching may be less than or equal to operating current
⇒ In given figure the switch was closed for a long time before opening at t = 0. The voltage V_{x} at t = 0^{+25 V50 V-50 V0 V}
⇒ Which of the following is non-saturating?
TTL
CMOS
ECL
Both (a) and (b)
⇒ In a mechanical accelerometer, the steady state displacement is a measure of
constant input acceleration
constant input velocity
either (a) or (b)
neither (a) nor (b)
⇒ Negative feedback reduces noise originating at the amplifier input.
TRUE
FALSE
⇒ As compared to their values in free space
velocity of electric wave in dielectric is smaller but wave length of electric wave is more
both velocity and wave length of electric wave in dielectric are higher
both velocity and wave length of electric wave in dielectric are smaller
wave length of electric wave is less but velocity is more in dielectric
⇒ If one wants to design a binary counter, preferred type of flip-flop is
D-type
SR type
Latch
JK type
⇒ A thyristor has its gate current zero. To start conduction the forward voltage must exceed
about 0.5 V
forward breakover voltage
on state voltage
peak working off state forward voltage
⇒ RS latch can be built with
NOR gates
NAND gates
NOR or NAND gates
none of the above
⇒ Study the circuit of figure and examine the following statem
1, 2 and 3
1 and 2
1 and 3
2 and 3
⇒ In amplitude modulation, the magnitude of side bands is
ma/2 times the carrier amplitude, E_{c}
ma times the carrier amplitude, E_{c}
2ma times the carrier amplitude, E_{c}
4ma times the carrier amplitude, E_{c}
⇒
Assertion (A): EM waves are attenuated as they travel outward from a source
Reason (R): Both field intensity and power density follow inverse square law.
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 correct but R is wrong
A is wrong but R is correct
⇒ In figure, R = 20KΩ and C = 75 pF. The converter clock frequency wil
606 Hz
1212 Hz
555 KHz
606 KHz
⇒ Consider the following program in Pascal
2.6
2.63
26.3
⇒ The expression Y (A, B, C) = ∑m (1, 3, 5, 6) is to realized using a multiplexer. Then
use 8 : 1 multiplexer and ground input lines 1, 3, 5, 6
use 8 : 1 multiplexer and ground input lines 0, 2, 4, 7
use 8 : 1 multiplexer and ground input lines 0, 1, 2, 3
use 8 : 1 multiplexer and ground input lines 4, 5, 6, 7
⇒ Depending on the technique used, digitized television requires a bit rate between __________ millions.
40 and 92.5
25 and 60
30 and 82.5
2
⇒ The scaling factor of an MOS device using constant voltage scaling model, the gate area of the device will be scaled as
1/a
1/a^{2}
1/a^{3}
1/a^{4}
⇒ Poynting vector is associated with which of the following?
Power flow in electromagnetic
Flux in magnetic field
Charge in electrostatic field
Current in electrostatic field
⇒ If f_{h}(t) is Hilbert transform of f(t), then Hilbert transform of f_{h}(t) is
-f(t)
+f(t)
f^{2}(t)
f(t)
⇒ Find the number of loop equation and number of possible trees for the given gr
7, 2097152
7, 262144
7.5764801
6, 823543
⇒ Which of the following theorems enables a number of voltage (or current) sources to be combined directly into a single voltage (or current) source?
Superposition theorem
Compensation theorem
Millman's theorem
Thevenin's theorem
⇒ The two pressure coils in a single phase power factor meter of turns
the same dimension and the same numbers of turns
the same dimension but different number of turns
different dimension and different numbers of turns
different dimension but the same numbers of turns
⇒ The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback would be.
0.4
0.05
0.2
0.8
⇒ Which of the following operation are performed on linear queues?
- Testing a linear queue for underflow
- Enqueue operation
- Dequeue operation
- Testing a linear queue for overflow.
1, 2 and 3
2, 3 and 4
1, 3 and 4
1, 2, 3 and 4
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Bode | 1. | Asymptotic plots |
B. | Evans | 2. | Polar plots |
C. | Nyquist | 3. | Root locus technique |
4. | M and N circles |
A-1, B-4, C-2
A-2, B-3, C-4
A-3, B-1, C-4
A-1, B-3, C-2
⇒ The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be
1011
1101
1100
1110
⇒ A sphere with charge Q was placed in, but not touching a larger hollow sphere. If there is any charge initially on the outer sphere; to remove it the outer sphere was earthed momentarily, and then the inner sphere was removed. The charge remaining on the outer sphere was then measured. This charge was found to be __________ to the charge on the inner sphere.
equal and of same again
equal and of opposite sign
unequal and of same sign
unequal and of opposite sign
⇒ The usable bandwidth of ridge wave guide
is lower than that of rectangular waveguide
is higher than that of rectangular waveguide
is almost same as that of rectangular waveguide
is very small as compared to that of rectangular waveguide
⇒ Least expensive logic
RTL
DTL
TTL
ECL
⇒ An RC driving point impedance function has zeros at s = - 2 and s = - 5. The admissible poles are
s = 0 and s = -6
s = -1 and s = -3
s = 0 and s = -1
s = -3 and s = -4
⇒ In a tungsten filament lamp
the current at the instant of switching is less than operating current
the current at the instant of switching is more than operating current
the current at the instant of switching is equal to operating current
the current at the instant of switching may be less than or equal to operating current
⇒ In given figure the switch was closed for a long time before opening at t = 0. The voltage V_{x} at t = 0^{+25 V50 V-50 V0 V}
⇒ Which of the following is non-saturating?
TTL
CMOS
ECL
Both (a) and (b)
⇒ In a mechanical accelerometer, the steady state displacement is a measure of
constant input acceleration
constant input velocity
either (a) or (b)
neither (a) nor (b)
⇒ Negative feedback reduces noise originating at the amplifier input.
TRUE
FALSE
⇒ As compared to their values in free space
velocity of electric wave in dielectric is smaller but wave length of electric wave is more
both velocity and wave length of electric wave in dielectric are higher
both velocity and wave length of electric wave in dielectric are smaller
wave length of electric wave is less but velocity is more in dielectric