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The use of free wheeling diode in controlled rectifier improves the waveshape of load current. | |
A. | TRUE [Correct Answer] |
B. | FALSE [Wrong Answer] |
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Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which of the following is not a valid integer constant in C (for 16 bit)?
321
-162
-65321
1
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ Which one of the following pairs is not correctly matched?
NaCl : Diamagnetic
Gd : Paramagnetic
Ferrite : Ferrimagnetic
Cr_{2} O_{3} : Ferromagnetic
⇒ A variable reluctance type tachometer has 150 teeth on rotor. The counter records 13500 pulse/sec. The rotational speed is
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5400 RPM
6000 RPM
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⇒ In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and
90°
60°
45°
30°
⇒ For an n-channel JEFT having drain source voltage constant if the gate source voltage is increased (more negative) pinch off would occur for
high values of drain current
saturation values of drain current
zero drain current
gate current equal to the drain current
⇒ In a modulator it is found that the amplitude spectrum consists a component at f_{c}, the carrier frequency and one component each at f_{c} - f_{s} and f_{c} + f_{s} where f_{s} is the modulating signal frequency. Then the modulator used is
AM
AM or MBFM with modulation index 0.5
FM
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⇒ For determining the network functions of a two-port network, it is required to consider that
all initial conditions remain same
all initial conditions are zero
part of initial conditions are equal to zero
initial conditions vary depending on nature of network
⇒ An amplifier has open loop gain of 100, input impedance 1 kΩ and output impedance 100 Ω. If negative feedback with β = 0.99 is used, the new input and output impedances are
10 Ω and 1 Ω
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⇒ Consider the following program in B
2.827
28.27
282.7
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⇒ A complex wave is 5 + 5 sin ωt. Its rms value is
7.07 V
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⇒ A branched duplexer requires
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⇒ How many number of branches the root loci of the equation s(s + 2)(s + 3) + K(s + 2) = 0 have?
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Two
Three
⇒ A circular waveguide carries TE_{11} mode whose radial electric-field is given
10 cm
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2p cm
8 cm
⇒ A 3 stage Johnson counter shown in figure is clocked at a constant frequency of f_{c} from the starting state of Q_{0} Q_{1} Q_{2} = 101. The frequency of output Q_{0} Q_{1} Q_{2} wil
f_{c}/2
f_{c}/3
f_{c}/6
f_{c}/8
⇒ The order of the differential equa
1
2
3
4
⇒ Which of the following does not show non-linear V-I characteristics?
Schottky diode
Tunnel diode
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⇒ The zinc can of a dry cell serves as positive terminal.
TRUE
FALSE
⇒ Which one is correct option about ROC?
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a and b
only a
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common collector circuit
common base circuit
common emitter circuit
either (b) or (c)
⇒ In the network shown in figure, the voltage drops across R_{2} and R_{3} are 10 V and 16 V with polarities as shown. The current in R_{1is 9 A and directed towards node 0is 9 A and directed away from node 0is 9 A but directed of current cannot be foundis impossible to be found}
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radiation
conductor heating
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⇒ An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
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⇒ The factor η for a UJT is about
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0.2
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⇒ For the network shown, determine z_{1} , z_{0} and A_{vzi = 1.067 Ω; z0 = 3 kΩ; Av = 280zi = 1.067 Ω; z0 = 3 kΩ; Av = - 280.37zi = 937 Ω; z0 = 3 Ω; Av = 281zi = 937 Ω; z0 = 33 kΩ; Av = - 280.37}
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ The first machine cycle of an instruction is always
a memory read cycle
a fetch cycle
a input/output read cycle
a memory write cycle
⇒ The magnitude of transport lag factor is always zero.
TRUE
FALSE
⇒ If S represents the carrier synchronization at the receiver and r represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
r = 0.5, S is required
r = 1.0, S is required
r = 0.5, S is not required
r = 1.0, S is not required
⇒ Which of the following is not a valid integer constant in C (for 16 bit)?
321
-162
-65321
1
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ Which one of the following pairs is not correctly matched?
NaCl : Diamagnetic
Gd : Paramagnetic
Ferrite : Ferrimagnetic
Cr_{2} O_{3} : Ferromagnetic
⇒ A variable reluctance type tachometer has 150 teeth on rotor. The counter records 13500 pulse/sec. The rotational speed is
4800 RPM
5400 RPM
6000 RPM
7200 RPM
⇒ In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and
90°
60°
45°
30°
⇒ For an n-channel JEFT having drain source voltage constant if the gate source voltage is increased (more negative) pinch off would occur for
high values of drain current
saturation values of drain current
zero drain current
gate current equal to the drain current
⇒ In a modulator it is found that the amplitude spectrum consists a component at f_{c}, the carrier frequency and one component each at f_{c} - f_{s} and f_{c} + f_{s} where f_{s} is the modulating signal frequency. Then the modulator used is
AM
AM or MBFM with modulation index 0.5
FM
PAM
⇒ For determining the network functions of a two-port network, it is required to consider that
all initial conditions remain same
all initial conditions are zero
part of initial conditions are equal to zero
initial conditions vary depending on nature of network
⇒ An amplifier has open loop gain of 100, input impedance 1 kΩ and output impedance 100 Ω. If negative feedback with β = 0.99 is used, the new input and output impedances are
10 Ω and 1 Ω
10 Ω and 10 kΩ
100 kΩ and 1 Ω
100 kΩ and 10 Ω
⇒ Consider the following program in B
2.827
28.27
282.7
2827
⇒ A complex wave is 5 + 5 sin ωt. Its rms value is
7.07 V
5 V
10 V
6.12 V
⇒ A branched duplexer requires
TR tubes
ATR tube
both TR and ATR tube
none of the above
⇒ How many number of branches the root loci of the equation s(s + 2)(s + 3) + K(s + 2) = 0 have?
Zero
One
Two
Three
⇒ A circular waveguide carries TE_{11} mode whose radial electric-field is given
10 cm
3p cm
2p cm
8 cm
⇒ A 3 stage Johnson counter shown in figure is clocked at a constant frequency of f_{c} from the starting state of Q_{0} Q_{1} Q_{2} = 101. The frequency of output Q_{0} Q_{1} Q_{2} wil
f_{c}/2
f_{c}/3
f_{c}/6
f_{c}/8
⇒ The order of the differential equa
1
2
3
4
⇒ Which of the following does not show non-linear V-I characteristics?
Schottky diode
Tunnel diode
Thermister, at a fixed temperature
p-n junction diode
⇒ The zinc can of a dry cell serves as positive terminal.
TRUE
FALSE
⇒ Which one is correct option about ROC?
ROC does not contain any pole
ROC of finite duration sequence is entire plane expect z = 0, z = ∞
a and b
only a
⇒ If it is desired to have low output impedance in an amplifier circuit then we should use
common collector circuit
common base circuit
common emitter circuit
either (b) or (c)
⇒ In the network shown in figure, the voltage drops across R_{2} and R_{3} are 10 V and 16 V with polarities as shown. The current in R_{1is 9 A and directed towards node 0is 9 A and directed away from node 0is 9 A but directed of current cannot be foundis impossible to be found}
⇒ When energy is fed into open wire transmission line the energy may get dissipated due to
radiation
conductor heating
dielectric heating
all of the above
⇒ An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
the polarity of voltage across R is same during discharge and during charge
the polarity of voltage across R during discharging is opposite to that during charging
the polarity of voltage across R depends on time constant RC
none of the above
⇒ Thin gate oxide in a CMOS process in preferably grown using
wet oxidation
dry oxidation
epitaxial deposition
ion implantation
⇒ The factor η for a UJT is about
0.1
0.2
0.6
0.9
⇒ For the network shown, determine z_{1} , z_{0} and A_{vzi = 1.067 Ω; z0 = 3 kΩ; Av = 280zi = 1.067 Ω; z0 = 3 kΩ; Av = - 280.37zi = 937 Ω; z0 = 3 Ω; Av = 281zi = 937 Ω; z0 = 33 kΩ; Av = - 280.37}
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ The first machine cycle of an instruction is always
a memory read cycle
a fetch cycle
a input/output read cycle
a memory write cycle
⇒ The magnitude of transport lag factor is always zero.
TRUE
FALSE
⇒ If S represents the carrier synchronization at the receiver and r represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
r = 0.5, S is required
r = 1.0, S is required
r = 0.5, S is not required
r = 1.0, S is not required