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An air gap provided in the iron core of an inductor prevents | |
A. | flux leakage [Wrong Answer] |
B. | hysteresis loss [Wrong Answer] |
C. | core saturation [Correct Answer] |
D. | heat generation [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 :
⇒ Consider the following statements :
1, 2, and 3
1, 2 and 4
1, 2, 3 and 4
3 and 4
⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is
symmetrical about the carrier
not necessarily symmetrical about the carrier
decided by the predominant sidebands
none of the above
⇒ The torque in induction wattmeters due to
capacitive current
electrostatic effect
hall effect
eddy currents
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒ Binary storage of decimal number 44 in 8 bits is
101100
10101100
10101101
101101
⇒ The dual of a link is
twig
node
loop
tree branch
⇒ 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
⇒
A-1, B-2, C-3, D-4
A-4, B-3, C-2, D-1
A-2, B-4, C-1, D-3
A-3, B-1, C-4, D-2
⇒ How many interrupts are there of 8085 μP?
4
5
6
8
⇒ Which of the following is not a conducting material?
Copper
Tungsten
Germanium
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⇒ The clear data and present input of the JK flip-flop are known as
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synchronous inputs
indirect inputs
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⇒ If a and b are the dimensions of waveguide then
a = 3b
a = 2b
a = b
a = b/4
⇒ A PIN diode can be used
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as a series mounted switch
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⇒
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
⇒ What binary number does second row represent?
1111001
1010101
10101010
11101010
⇒ An integrating amplifier has resistance in feedback path.
TRUE
FALSE
⇒ If V_{a1}, V_{a2}, V_{a0} are the symmetrical components of V_{a}, then
V_{a} = V_{a1} + V_{a2} + V_{a0}
V_{a} = a^{2}V_{a1} + aV_{a2} + V_{a0}
V_{a} = aV_{a1} + a^{2}V_{a2} + V_{a0}
V_{a} = aV_{a0} + a^{2}V_{a1} + V_{a2}
⇒ Which of the following theorems enables a number of voltage (or current) sources to be combined directly into a single voltage (or current) source?
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Millman's theorem
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⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be
2.5 mH
5 mH
20 mH
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⇒ A direct radiating cone type loudspeaker attenuates :
medium range frequencies
very low frequencies
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⇒ If t_{p} is the pulse width, Δ_{t} is the propagation delay, T is period of pulse train then the following condition can avoid the race around condition
t_{p} = Δt = T
2t_{p} > Δt > T
t_{p} < Δt < T
t_{p} < Δt < T
⇒ The current wave shown in figure is applied by a 0.1 F capacitor at t = 0. At t = 0^{+}, the voltage across capacito
0
4 V
10 V
20 V
⇒ The open collector gates in the given figure are tied together. The output
A + B + C + D
A + B + C + D
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AB + CD
⇒
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 true, R is false
A is false, R is true
⇒ The common gate amplifier has a characteristically __________ input resistance and a __________ output resistance.
low, low
high, high
low, high
high, low
⇒ If the value of C_{2} and C_{3} are doubled, the oscillation frequency will be
quadrupled
doubled
unchanged
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⇒ Which of the following is not correct?
P(A) = P(A) - 1
0 ≤ P ≤ 1
If A and B are mitual exclusive then P(A + B) = P(A) + P(B)
P(A) = 1 - P(A)
⇒ CATV stands for
Common Antenna Television
Community Antenna Television
Cable Antenna Television
Channel Antenna Television
⇒ For most static RAM the maximum access time is about
1 ns
10 ns
100 ns
1 μs
⇒ End fire array has a dipole spacing of λ/2.
TRUE
FALSE
⇒ Consider the following statements :
- Tellegen's theorem is applicable to any lumped networks.
- The reciprocity theorem is applicable to linear bilateral networks.
- Thevenin's theorem is applicable to two- terminal linear active networks.
- Norton's theorem is applicable to two-terminal linear active networks.
1, 2, and 3
1, 2 and 4
1, 2, 3 and 4
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⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is
symmetrical about the carrier
not necessarily symmetrical about the carrier
decided by the predominant sidebands
none of the above
⇒ The torque in induction wattmeters due to
capacitive current
electrostatic effect
hall effect
eddy currents
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒ Binary storage of decimal number 44 in 8 bits is
101100
10101100
10101101
101101
⇒ The dual of a link is
twig
node
loop
tree branch
⇒ 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
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Reflex Klystron | 1. | High efficiency |
B. | Dielectric loaded wave guide | 2. | Slow wave structure |
C. | TWT | 3. | Cross field device |
D. | Multi Cavity Klystron | 4. | Oscillator |
A-1, B-2, C-3, D-4
A-4, B-3, C-2, D-1
A-2, B-4, C-1, D-3
A-3, B-1, C-4, D-2
⇒ How many interrupts are there of 8085 μP?
4
5
6
8
⇒ Which of the following is not a conducting material?
Copper
Tungsten
Germanium
Platinum
⇒ The clear data and present input of the JK flip-flop are known as
direct inputs
synchronous inputs
indirect inputs
either direct inputs or synchronous inputs
⇒ If a and b are the dimensions of waveguide then
a = 3b
a = 2b
a = b
a = b/4
⇒ A PIN diode can be used
as a shunt mounted switch
as a series mounted switch
both as series or shunt mounted switch
non of the above
⇒
Assertion (A): Alkali metals are used as emitters in phototubes.
Reason (R): Alkali metals have low work functions.
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
⇒ What binary number does second row represent?
1111001
1010101
10101010
11101010
⇒ An integrating amplifier has resistance in feedback path.
TRUE
FALSE
⇒ If V_{a1}, V_{a2}, V_{a0} are the symmetrical components of V_{a}, then
V_{a} = V_{a1} + V_{a2} + V_{a0}
V_{a} = a^{2}V_{a1} + aV_{a2} + V_{a0}
V_{a} = aV_{a1} + a^{2}V_{a2} + V_{a0}
V_{a} = aV_{a0} + a^{2}V_{a1} + V_{a2}
⇒ 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
⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be
2.5 mH
5 mH
20 mH
40 mH
⇒ A direct radiating cone type loudspeaker attenuates :
medium range frequencies
very low frequencies
high frequencies
very low and high frequencies
⇒ If t_{p} is the pulse width, Δ_{t} is the propagation delay, T is period of pulse train then the following condition can avoid the race around condition
t_{p} = Δt = T
2t_{p} > Δt > T
t_{p} < Δt < T
t_{p} < Δt < T
⇒ The current wave shown in figure is applied by a 0.1 F capacitor at t = 0. At t = 0^{+}, the voltage across capacito
0
4 V
10 V
20 V
⇒ The open collector gates in the given figure are tied together. The output
A + B + C + D
A + B + C + D
(A + B) (C + D)
AB + CD
⇒
Assertion (A): The advantages of totem pole output are fast switching and low power consumption.
Reason (R): IC packages available are DIP, surface mount and J lead surface mount.
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 true, R is false
A is false, R is true
⇒ The common gate amplifier has a characteristically __________ input resistance and a __________ output resistance.
low, low
high, high
low, high
high, low
⇒ If the value of C_{2} and C_{3} are doubled, the oscillation frequency will be
quadrupled
doubled
unchanged
halved
⇒ Which of the following is not correct?
P(A) = P(A) - 1
0 ≤ P ≤ 1
If A and B are mitual exclusive then P(A + B) = P(A) + P(B)
P(A) = 1 - P(A)
⇒ CATV stands for
Common Antenna Television
Community Antenna Television
Cable Antenna Television
Channel Antenna Television
⇒ For most static RAM the maximum access time is about
1 ns
10 ns
100 ns
1 μs
⇒ End fire array has a dipole spacing of λ/2.
TRUE
FALSE