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Assertion (A): Derivative control action cannot be used alone. Reason (R): Derivative control action is effective only during transient periods. | |
A. | Both A and R are correct and R is correct explanation of A [Correct Answer] |
B. | Both A and R are correct but R is not correct explanation of A [Wrong Answer] |
C. | A is correct but R is wrong [Wrong Answer] |
D. | R is correct but A is wrong [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 :
⇒ The resistance of a dc galvanometer is 20 Ω. A current of 10 mA causes full scale deflection. To convert it into 0-300 V voltmeter, we have to use a series resistance of
30000 Ω
29980 Ω
6000 Ω
15 Ω
⇒ In the FM wave described by equation v = 15 sin (4 x 10^{8} t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are
63.66 MHz and 175 Hz
4 x 10^{8} Hz and 1100 Hz
175 Hz and 63.66 MHz
1100 Hz and 4 x 10^{8} Hz
⇒ To realize following function 'f'
3
6
4
10
⇒ Decimal number 9 in gray code =
1100
1101
110
1111
⇒ Brewster angle is the angle for which there is
no reflection and the incident wave is vertically polarized
reflection and the incident wave is horizontally polarized
no reflection and the incident wave is horizontally polarized
none of the above
⇒ The number of inputs and outputs in a full adder are
2 and 1
2 and 2
3 and 3
3 and 2
⇒ An RC coupled amplifier has an open loop gain of 200 and a lower cutoff frequency of 50 Hz. If negative feedback with β = 0.1 is used, the lower cut off frequency will be
about 50 Hz
about 5 Hz
about 2.38 Hz
about 70.5 Hz
⇒ A single layer air cored coil has n turns and inductance L. If a new coil is formed by having 2n turns while keeping the coil length and diameter the same, the new inductance is
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L
2 L
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⇒ The first and the last critical frequency of an RC driving point impedance function must respectively by
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a zero and a zero
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⇒ In TV system in India IF video and IF audio frequencies are
33.4 and 28.4 MHz respectively
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⇒ In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is
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⇒ A constant k band stop filter has cutoff frequencies of 1000 and 4000 Hz. The attenuation will be maximum when frequency is
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1 and 4
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A-1, B-3, C-4
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⇒ Square law modulators utilise
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⇒ The electric field on the surface of a perfect conductor is 2V/m. The conductor is immersed in water with ε = 80 ε_{0}. The surface charge density on the conductor is ((ε_{0} = 10^{-9}/36p)F/m)
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⇒ A balanced modulator circuit uses
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⇒ The modulation index of wideband FM signal is
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⇒ The resistance of a dc galvanometer is 20 Ω. A current of 10 mA causes full scale deflection. To convert it into 0-300 V voltmeter, we have to use a series resistance of
30000 Ω
29980 Ω
6000 Ω
15 Ω
⇒ In the FM wave described by equation v = 15 sin (4 x 10^{8} t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are
63.66 MHz and 175 Hz
4 x 10^{8} Hz and 1100 Hz
175 Hz and 63.66 MHz
1100 Hz and 4 x 10^{8} Hz
⇒ To realize following function 'f'
3
6
4
10
⇒ Decimal number 9 in gray code =
1100
1101
110
1111
⇒ Brewster angle is the angle for which there is
no reflection and the incident wave is vertically polarized
reflection and the incident wave is horizontally polarized
no reflection and the incident wave is horizontally polarized
none of the above
⇒ The number of inputs and outputs in a full adder are
2 and 1
2 and 2
3 and 3
3 and 2
⇒ An RC coupled amplifier has an open loop gain of 200 and a lower cutoff frequency of 50 Hz. If negative feedback with β = 0.1 is used, the lower cut off frequency will be
about 50 Hz
about 5 Hz
about 2.38 Hz
about 70.5 Hz
⇒ A single layer air cored coil has n turns and inductance L. If a new coil is formed by having 2n turns while keeping the coil length and diameter the same, the new inductance is
0.5 L
L
2 L
4 L
⇒ The first and the last critical frequency of an RC driving point impedance function must respectively by
a zero and a pole
a zero and a zero
a pole and a pole
a pole and a zero
⇒ The simplest standing wave is due to the value of reflection co-efficient is
-1
zero
unity
infinity
⇒ The dc output voltage of the circui
4.3 V
1.369 V
3.87 V
1.94 V
⇒ P flag is for parity.
TRUE
FALSE
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | V_{OH}(min) | 1. | 2.4 V |
B. | V_{IH}(min) | 2. | 1.5 V |
C. | V_{OL}(max) | 3. | 0.4 V |
4. | 2.0 V | ||
5. | 0.8 V |
A-1, B-3, C-4
A-1, B-4, C-3
A-5, B-4, C-3
A-1, B-5, C-2
⇒ A single phase semiconverter is feeding a highly inductive load and has a freewheeling diode across the load. The waveshape of input current is
sinusoidal
rectangular
sinusoidal or rectangular
triangular
⇒ A 50 p characteristic impedance line is connected to a load which shows a reflection coefficients of 0.268. If V_{in} = 15 volt, then the net power delivered to the load will be
0.139 W
1.39 W
0.278 W
2.78 W
⇒ In TV system in India IF video and IF audio frequencies are
33.4 and 28.4 MHz respectively
38.9 and 33.4 MHz respectively
43.8 and 38.9 MHz respectively
33.4 and 38.9 MHz respectively
⇒ In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is
2 and 7
3 and 7
1 and 6
3 and 6
⇒ 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)
⇒ A constant k band stop filter has cutoff frequencies of 1000 and 4000 Hz. The attenuation will be maximum when frequency is
4000 Hz
3000 Hz
2000 Hz
1000 Hz
⇒ Which of the following oscillator circuits uses three capacitors in the phase shifting network?
Hartley
Clapp
Colpitt's
Both (b) and (c)
⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system
- [5 - 4 e^{-2t}] u(t)
- [e^{-2t} + 5] u(t)
- d(t) + 8 e^{-2t} u(t)
- d(t) + 4 e^{-2t} u(t)
1 and 3
1 and 4
2 and 4
2 and 3
⇒ If any term in the first column of a Routh array becomes zero, then
Routh criterion cannot be used to determine stability
Routh criterion can be used by substituting a small positive number for zero and completing the array
Routh criterion can be used by substituting a big positive number for zero and completing the array
Routh criterion can be used by substituting a small negative number for zero and completing the array
⇒
Match the following:
List I (Properties) | List II (Relations) | ||
---|---|---|---|
A. | Linear but NOT time-invariant | 1. | y(t) = t^{2}x(t) |
B. | Time-invariant but NOT linear | 2. | y(t) = t |x(t)| |
C. | Linear and time invariant | 3. | y(t) = |x(t)| |
4. | y(t) = x(t - 5) |
A-1, B-3, C-4
A-2, B-3, C-4
A-3, B-1, C-2
A-1, B-2, C-3
⇒ Square law modulators utilise
linear range of V-I characteristics of a diode
linear range of V-I characteristics of a triode
non-linear region of V-I dynamic characteristics of a diode
non-linear region of V-I dynamic characteristics of a triode
⇒ For a sinusoidal input, the circuit shown in the figure will act
Pulse generator
Full wave rectifier
Ramp generator
Voltage Doubler
⇒ An antenna has a gain of 44 dB. Assuming that the main beam of the antenna is circular in cross-section the beamwidth will be
0.4456°
1.4456°
2.4456°
3.4456°
⇒ The electric field on the surface of a perfect conductor is 2V/m. The conductor is immersed in water with ε = 80 ε_{0}. The surface charge density on the conductor is ((ε_{0} = 10^{-9}/36p)F/m)
0 c/m^{2}
2 c/m^{2}
1.8 x 10^{-11} c/m^{2}
1.14 x 10^{-9} c/m^{2}
⇒ A balanced modulator circuit uses
two identical diodes with same V-I characteristics
two triodes with different V-I characteristics
two diodes with different V-I characteristics
a diode and a triode
⇒ The modulation index of wideband FM signal is
less than unity
unity
greater than unity
nearly 0.67
⇒ A 12 bit ADC is operating with 1 μs clock period. Total conversion time is 14 μs. ADC is
flash type
counting type
integrating type
successive approximation type