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The sum of two or more arbitrary sinusoidal is | |
A. | always periodic [Wrong Answer] |
B. | periodic under certain conditions [Wrong Answer] |
C. | never periodic [Wrong Answer] |
D. | periodic only if all the sinusoidals are identical in frequency and phase [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The dead zone in a pyrometer is 0.125% of span. The calibration is 400°C to 1000°C. What temperature change might occur before it is detected.
0.125°C
0.75°C
0.4°C
1°C
⇒ Efficiency of class A power amplifier is very poor.
TRUE
FALSE
⇒ A wire strain gauge has a gauge factor of 2, resistance of 125 Ω and length 1 m. If length of wire changes by .005 m, change in resistance will be
0.25 Ω
0.5 Ω
1.25 Ω
2.5 Ω
⇒ Which binary subtraction is incorrect?
100101 - 100011 = 000000
10000000 - 01000000 = 1000000
10111110.1 - 101011.11 = 110010.11
11111111 - 1111111 = 10000000
⇒ For the logic circuit shown in figure, the simplified Boolean expression for the output
A + B + C
AB
B
C
⇒ The chip 8257 is a
programmable interrupt controller
programmable DMA controller
programmable peripheral interface
none of the above
⇒ If F(jω) is the Fourier transform of f(t), then
£ f(- t) = F(jω)
£ f(- t) = F* (jω)
£ f(- t) = F(- jω)
£ f(- t) = F* (- jω)
⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are
16
15
14
13
⇒ In 8085 microprocessor, an active low signal INTA is not needed from up service which of the following interrupt requ
TRAP
INTR
RST 7.5
RST 5.5
⇒ A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is
500 Ω
50 Ω
20 Ω
5 Ω
⇒ The function of shunt in an ammeter is to
by pass the current
increase sensitivity of meter
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all of the above
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ Figure sho
JFET
n-channel MOSFET
p-channel MOSFET
none of the above
⇒ For the system of the given figure, the damping ratio of closed loop pole
1.5
1
0.5
0.25
⇒ Consider the following statements:
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
⇒ For H(s) to be positive real, the condition Re[H(jω)] ≥ 0 for 0 ≤ ω ≤ ∞ is
a necessary condition
a sufficient condition
a necessary and sufficient condition
is not a necessary condition
⇒ If each branch of a Delta circuit has impedance 3 Z then each branch of the equivalent Y circuit has impedance.
Z/3
3 Z
3/3 Z
Z/3
⇒ An ideal voltage amplifier should have
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high input impedance and low output impedance
high input impedance and high output impedance
low input impedance and low output impedance
⇒ The number of leads in a DIAC are
2
3
4
6
⇒ In the BJT amplifier shown in the figure is the transistor is biased in the forward active region. Putting a capacitor across R_{E}
decrease the voltage gain and decrease the I/P impedance
increase the voltage gain and decrease the I/P Impedance
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none of the above
⇒ Antenna is a __________ element
passive
active
resistive
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⇒ Commercial ECL gates use two ground lines and one negative supply to
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increase fan out
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eliminate the effect of power line glitches on the biasing circuit
⇒ In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require
1120 bits
2240 bits
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⇒ For an insulating material, dielectric strength and dielectric losses should be
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⇒ In the circuit shown in the given figure, the current flowing through resistance of 100 Ω woul
8 mA
10 mA
20 mA
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⇒ A flip flop is a
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⇒ What is the characteristic of a good control system?
Sensitive to parameter variation
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Neither sensitive to parameter variation nor sensitive to input commands
Insensitive to parameter variation but sensitive to input commands
⇒ The minimum number of equations required to analyze the circuit shown in the figur
3
4
6
7
⇒ The following switching functions are to be implemented using a decoder
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3 to 8 line
4 to 16 line
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⇒ Which of the following constitute the loss resistance of an antenna?
Dielectric loss
Leakage loss in insulation
Loss in earth connections
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⇒ The dead zone in a pyrometer is 0.125% of span. The calibration is 400°C to 1000°C. What temperature change might occur before it is detected.
0.125°C
0.75°C
0.4°C
1°C
⇒ Efficiency of class A power amplifier is very poor.
TRUE
FALSE
⇒ A wire strain gauge has a gauge factor of 2, resistance of 125 Ω and length 1 m. If length of wire changes by .005 m, change in resistance will be
0.25 Ω
0.5 Ω
1.25 Ω
2.5 Ω
⇒ Which binary subtraction is incorrect?
100101 - 100011 = 000000
10000000 - 01000000 = 1000000
10111110.1 - 101011.11 = 110010.11
11111111 - 1111111 = 10000000
⇒ For the logic circuit shown in figure, the simplified Boolean expression for the output
A + B + C
AB
B
C
⇒ The chip 8257 is a
programmable interrupt controller
programmable DMA controller
programmable peripheral interface
none of the above
⇒ If F(jω) is the Fourier transform of f(t), then
£ f(- t) = F(jω)
£ f(- t) = F* (jω)
£ f(- t) = F(- jω)
£ f(- t) = F* (- jω)
⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are
16
15
14
13
⇒ In 8085 microprocessor, an active low signal INTA is not needed from up service which of the following interrupt requ
TRAP
INTR
RST 7.5
RST 5.5
⇒ A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is
500 Ω
50 Ω
20 Ω
5 Ω
⇒ The function of shunt in an ammeter is to
by pass the current
increase sensitivity of meter
increase resistance of meter
all of the above
⇒
Assertion (A): The gall tinsley potentiometer is a coordinate potentiometer and has two exactly similar potentiometers.
Reason (R): An ac potentiometer may measure the unknown voltage in polar form or rectangular coordinate form.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ Figure sho
JFET
n-channel MOSFET
p-channel MOSFET
none of the above
⇒ For the system of the given figure, the damping ratio of closed loop pole
1.5
1
0.5
0.25
⇒ Consider the following statements:
- If any root of characteristic equation has a positive real part the impulse response is unbounded and system is unstable.
- If all the roots of a characteristic equation have negative real parts, the impulse response decays to zero.
- If one or more non-repeated roots of characteristic equation are on jω axis impulse response is bounded but the system is unstable.
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
⇒ For H(s) to be positive real, the condition Re[H(jω)] ≥ 0 for 0 ≤ ω ≤ ∞ is
a necessary condition
a sufficient condition
a necessary and sufficient condition
is not a necessary condition
⇒ If each branch of a Delta circuit has impedance 3 Z then each branch of the equivalent Y circuit has impedance.
Z/3
3 Z
3/3 Z
Z/3
⇒ An ideal voltage amplifier should have
low input impedance and high output impedance
high input impedance and low output impedance
high input impedance and high output impedance
low input impedance and low output impedance
⇒ The number of leads in a DIAC are
2
3
4
6
⇒ In the BJT amplifier shown in the figure is the transistor is biased in the forward active region. Putting a capacitor across R_{E}
decrease the voltage gain and decrease the I/P impedance
increase the voltage gain and decrease the I/P Impedance
decrease the voltage gain and Increase the I/P impedance
none of the above
⇒ Antenna is a __________ element
passive
active
resistive
capacitive
⇒ Commercial ECL gates use two ground lines and one negative supply to
reduce power consumption
increase fan out
reduce loading effect
eliminate the effect of power line glitches on the biasing circuit
⇒ In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require
1120 bits
2240 bits
33 bits
64 bits
⇒ For an insulating material, dielectric strength and dielectric losses should be
high and high
low and high
high and low
low and low
⇒ In the circuit shown in the given figure, the current flowing through resistance of 100 Ω woul
8 mA
10 mA
20 mA
100 mA
⇒ A flip flop is a
combinational circuit
memory element
arithmetic element
memory or arithmetic element
⇒ What is the characteristic of a good control system?
Sensitive to parameter variation
Insensitive to input command
Neither sensitive to parameter variation nor sensitive to input commands
Insensitive to parameter variation but sensitive to input commands
⇒ The minimum number of equations required to analyze the circuit shown in the figur
3
4
6
7
⇒ The following switching functions are to be implemented using a decoder
- f_{1} = ∑m (1, 2, 4, 8, 10, 14)
- f_{2} = ∑m (2, 5, 9, 15)
- f_{3} = ∑m (2, 4, 5, 6, 7)
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ Which of the following constitute the loss resistance of an antenna?
Dielectric loss
Leakage loss in insulation
Loss in earth connections
All of the above