Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
The skin depth at 1000 MHz as compared to that at 500 MHz is | |
A. | 2 [Wrong Answer] |
B. | 12 [Wrong Answer] |
C. | 0.707 [Correct Answer] |
D. | 0.5 [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ In deriving ac equivalent circuit for an amplifier circuit we short circuit
all resistors
all transistors
all inductors
all capacitors
⇒ An SR flip flop can be built using
NOR gate only
NAND gate only
either NOR or NAND gates
neither NOR nor NAND gates
⇒ In JK flip flop toggle state exists if
J = 0, K = 1
J = 1, K = 0
J = 0, K = 0
J = 1, K = 1
⇒ F = ∑(0, 3, 4, 5, 7) =
[B ⊕ C] + AC
B'C' + BC + AC
AB + BC + CA
None
⇒ Which of the following material has nearly zero temperature-coefficient of resistance?
Carbon
Porcelain
Copper
Manganin
⇒ The Boolean expression Y = (A + B + AB) C then Y will be equal to
AC
BC
C
none
⇒ A function Z(s) has zero at infinity if
the degree of numerator and denominator are equal
the numerator of Z(s) is one degree higher than denominator
the denominator of Z(s) is one degree higher than numerator
the degree of numerator and denominator are either equal or differ by one
⇒ In PCM the amplitude levels are transmitted in a 7 unit code. Sampling frequency is 10 kHz. The bandwidth should be
5 kHz
35 kHz
70 kHz
5 MHz
⇒ A circular waveguide carries TE_{11} mode whole radial electric field is give
10 cm
3 p cm
2 p cm
8 cm
⇒ A sinusoidal voltage is written as v = I_{m} (R^{2} + X_{C}^{2})^{0.5} sin 314 t. Its peak value and frequency are
I_{m} and 50
I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
0.707 I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
2 I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
⇒ A pulse transformer uses
ferrite core
air core
iron core
copper core
⇒ 2's complement number 00011111 = __________ _{10}
31
-31
11
-11
⇒ The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is
100 Ω
1000 Ω
1000 Ω ± 5%
1000 Ω ± 10%
⇒ The current through a 10 Ω resistance in a dc circuit having two emf sources is 3A. If this resistance is changed to 20 Ω, the new value of current will be
less than 3 A
equal or less than 3 A
equal to or less or more than 3 A
1.5 A
⇒ The upper and lower side frequencies for 3 kHz audio modulation with a 27 MHz carrier frequency will be
30 and 24 MHz
27.3 and 26.7 MHz
27.3 and 26.97 MHz
27.3 and 26.97 MHz
⇒ The electrolyte in a dry cell is completely dry.
TRUE
FALSE
⇒ The shunt admittance of a transmission line is given by
γ = R + jωL
γ = R - jωL
γ = G + jωC
γ = jωGC
⇒ In figure, A is ideal ammeter having zero resistance. It will read __________ amp
2
2.5
3
4
⇒ A voltage doubler circuit is fed by a voltage V_{m} sin ωt. The output voltage will be nearly 2 V_{m} only if
load resistance is small
load resistance is large
load resistance is neither small nor large
either (a) or (c)
⇒ The seven bit Hamming code received is 0010001. If even parity has been used, the correct code is
10001
1110001
110001
11001
⇒ The function f = A ⊕ B ⊕ A ⊕ D ⊕ E ⊕ C ⊕ D ⊕ E ⊕ F ⊕ G ⊕ F ⊕ G ⊕ C ⊕ E ⊕ A ⊕ D ⊕ B ⊕ E ⊕ E ⊕ B ⊕ B ⊕ B ⊕ B ⊕ D can be written as
A ⊕ B ⊕ D
A ⊕ B ⊕ E
A ⊕ E
A ⊕ E
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ For a level input sequential circuit
output in a level only
output is in the pulse form
output may be a pulse or a level form
none of these
⇒ The active elements on the positive and negative plates of lead acid battery are:
lead peroxide and lead
lead and lead peroxide
lead peroxide and lead sulphate
lead and lead
⇒ For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 pico sec. What is the fundamental frequency of the oscillator output _______
10 MHz
100 MHz
1 GHz
2 GHz
⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be
1024
512
256
64
⇒ In INHIBIT operation
output is 1 when both inputs are 0
output is 0 when blocking input is 1
output is 0 when blocking input is 0
output is 1 when blocking input is either 0 or 1
⇒ A 16 x 8 ROM stores these words in its first four locations, as given below. Which of this represents 3 CH in hexadecimal?
R_{0} = 1110 0010
R_{1} = 0101 0111
R_{2} = 0011 1100
R_{3} = 1011 1111
⇒ In a second order system with a unit step input, the speed of response is high if system is
overdamped
undamped system
critically damped
underdamped
⇒ The depletion layer across a P^{+} n junction lies
mostly in the P^{+} region
mostly in n region
equally in both the P^{+} and n-region
entirely in the P^{+} region
⇒ In deriving ac equivalent circuit for an amplifier circuit we short circuit
all resistors
all transistors
all inductors
all capacitors
⇒ An SR flip flop can be built using
NOR gate only
NAND gate only
either NOR or NAND gates
neither NOR nor NAND gates
⇒ In JK flip flop toggle state exists if
J = 0, K = 1
J = 1, K = 0
J = 0, K = 0
J = 1, K = 1
⇒ F = ∑(0, 3, 4, 5, 7) =
[B ⊕ C] + AC
B'C' + BC + AC
AB + BC + CA
None
⇒ Which of the following material has nearly zero temperature-coefficient of resistance?
Carbon
Porcelain
Copper
Manganin
⇒ The Boolean expression Y = (A + B + AB) C then Y will be equal to
AC
BC
C
none
⇒ A function Z(s) has zero at infinity if
the degree of numerator and denominator are equal
the numerator of Z(s) is one degree higher than denominator
the denominator of Z(s) is one degree higher than numerator
the degree of numerator and denominator are either equal or differ by one
⇒ In PCM the amplitude levels are transmitted in a 7 unit code. Sampling frequency is 10 kHz. The bandwidth should be
5 kHz
35 kHz
70 kHz
5 MHz
⇒ A circular waveguide carries TE_{11} mode whole radial electric field is give
10 cm
3 p cm
2 p cm
8 cm
⇒ A sinusoidal voltage is written as v = I_{m} (R^{2} + X_{C}^{2})^{0.5} sin 314 t. Its peak value and frequency are
I_{m} and 50
I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
0.707 I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
2 I_{m} (R_{2} + X^{2}_{C})^{0.5} and 50
⇒ A pulse transformer uses
ferrite core
air core
iron core
copper core
⇒ 2's complement number 00011111 = __________ _{10}
31
-31
11
-11
⇒ The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is
100 Ω
1000 Ω
1000 Ω ± 5%
1000 Ω ± 10%
⇒ The current through a 10 Ω resistance in a dc circuit having two emf sources is 3A. If this resistance is changed to 20 Ω, the new value of current will be
less than 3 A
equal or less than 3 A
equal to or less or more than 3 A
1.5 A
⇒ The upper and lower side frequencies for 3 kHz audio modulation with a 27 MHz carrier frequency will be
30 and 24 MHz
27.3 and 26.7 MHz
27.3 and 26.97 MHz
27.3 and 26.97 MHz
⇒ The electrolyte in a dry cell is completely dry.
TRUE
FALSE
⇒ The shunt admittance of a transmission line is given by
γ = R + jωL
γ = R - jωL
γ = G + jωC
γ = jωGC
⇒ In figure, A is ideal ammeter having zero resistance. It will read __________ amp
2
2.5
3
4
⇒ A voltage doubler circuit is fed by a voltage V_{m} sin ωt. The output voltage will be nearly 2 V_{m} only if
load resistance is small
load resistance is large
load resistance is neither small nor large
either (a) or (c)
⇒ The seven bit Hamming code received is 0010001. If even parity has been used, the correct code is
10001
1110001
110001
11001
⇒ The function f = A ⊕ B ⊕ A ⊕ D ⊕ E ⊕ C ⊕ D ⊕ E ⊕ F ⊕ G ⊕ F ⊕ G ⊕ C ⊕ E ⊕ A ⊕ D ⊕ B ⊕ E ⊕ E ⊕ B ⊕ B ⊕ B ⊕ B ⊕ D can be written as
A ⊕ B ⊕ D
A ⊕ B ⊕ E
A ⊕ E
A ⊕ E
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ For a level input sequential circuit
output in a level only
output is in the pulse form
output may be a pulse or a level form
none of these
⇒ The active elements on the positive and negative plates of lead acid battery are:
lead peroxide and lead
lead and lead peroxide
lead peroxide and lead sulphate
lead and lead
⇒ For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 pico sec. What is the fundamental frequency of the oscillator output _______
10 MHz
100 MHz
1 GHz
2 GHz
⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be
1024
512
256
64
⇒ In INHIBIT operation
output is 1 when both inputs are 0
output is 0 when blocking input is 1
output is 0 when blocking input is 0
output is 1 when blocking input is either 0 or 1
⇒ A 16 x 8 ROM stores these words in its first four locations, as given below. Which of this represents 3 CH in hexadecimal?
R_{0} = 1110 0010
R_{1} = 0101 0111
R_{2} = 0011 1100
R_{3} = 1011 1111
⇒ In a second order system with a unit step input, the speed of response is high if system is
overdamped
undamped system
critically damped
underdamped
⇒ The depletion layer across a P^{+} n junction lies
mostly in the P^{+} region
mostly in n region
equally in both the P^{+} and n-region
entirely in the P^{+} region