Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
It is best to use for coupling a coaxial line to a parallel wire transmission line. | |
A. | directional Coupler [Wrong Answer] |
B. | balun [Correct Answer] |
C. | slotted line [Wrong Answer] |
D. | tee [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A transistor has a maximum power dissipation of 350 mW at an ambient temperature of 25°C. If derating factor is 2 mW/°C, the maximum power dissipation for 40°C ambient temperature is
300 mW
330 mW
350 mW
380 mW
⇒ The inverse response of a system h(n) = a^{n}∪(n) what is the condition for the system to be BIBO stable?
a is real and +ve
a is real and -ve
|a| > 1
|a| < 1
⇒ A current is flowing through a conductor with non-uniform area of cross-section. Then
current will be different at different cross-sections.
current will be the same at all the cross-sections.
current will be different but current density will be same at all the cross-sections
current will be the same but current density will be different at different cross-sections.
⇒ If x_{k} = 2^{k} for k ≤ 0 and = 0 for k > 0 X(z) = 2/(2 - z).
TRUE
FALSE
⇒ In the graphical analysis of an amplifier circuit, the slope of dc load line depends on
load resistance only
collector supply voltage only
both load resistance and collector supply voltage
none of the above
⇒ Figure repres
Integrator
Differentiator
High Pass Filter
Band Pass Filter
⇒ The input impedance of CRO is about
zero
10 Ω
100 Ω
one mega ohm
⇒ Figure shows current pulses of a class C power amplifier. The fundamental frequency of these pulse
100 kHz
1000 kHz
10 kHz
1 kHz
⇒ In the op-amp circuit of figure, V_{03 V1 - 4 V2-3 V1 + 4 V23(V1 - V2)-3(V1 - V2)}
⇒ A TRIAC is a semiconductor device which acts as a
2 terminal unidirectional switch
2 terminal bidirectional switch
3 terminal bidirectional switch
4 terminal multidirectional switch
⇒ In the full adder, denoting Sum by S and carry by C
S = 1 when two or more inputs are unity
C = 1 when two or more inputs are unity
C = 1 when all the inputs are unity
S = 1 when all the inputs are unity
⇒ Two products are sold from a vending machine, which has two push buttons P_{1} and P_{2}. When a button is pressed, the price of the corresponding product is displayed in a 7-segment display. If no buttons are pressed, '0' is displayed, signifying 'Rs' .0'. If only P_{1} is pressed, '2' is displayed, signifying 'Rs.
3 NOT and 4 OR
2 NOT and 4 OR
1 NOT and 3 OR
2 NOT and 3 OR
⇒ A 4 bit binary adder has 4 full adders.
TRUE
FALSE
⇒ Which distortion is least objectionable in case of audio amplifiers?
Phase distortion
Frequency distortion
Harmonic distortion
Inter-modulation distortion
⇒ If a capacitor is charged by a square wave current source the voltage across the capacitor is
triangular wave
step function
zero
square wave
⇒ In an AM system, doubling of modulation index doubles the antenna current. The system is
single side band full carrier
vestigial side band
single side band suppressed carrier
double side band full carrier
⇒ If an inductance L is connected in one arm of bridge and resistance R_{1}, R_{2}, R_{3} in other three arms
the bridge cannot be balanced
the bridge can be balanced
the bridge is balanced for some specified value of frequency
the bridge is balanced for some specific values of R_{1}, R_{2}, R_{3}
⇒ The device most likely to be found in an SSB transmitter is
class C audio amplifier
tuned modulator
class B RF amplifier
class A RF amplifier
⇒ In an n-type silicon crystal at room temperature, which of the following can have a concentration of 4 x 10^{19} cm^{-3}?
Silicon atoms
Holes
Dopant atoms
Valence electrons
⇒ The minimum value of h_{fe} of a transistor used in RC phase shift oscillator is
54.4
45.4
44.5
29
⇒ If reference sound pressure P_{0} is 2 x 10^{-5} N/m^{2}, a sound pressure of 90 dB is equal to
0.632 N/m^{2}
0.707 N/m^{2}
0.835 N/m^{2}
0.925 N/m^{2}
⇒ Symmetrical square wave of time period 100 μs can be obtained from square wave of time period 10 μs by using
divide by 5 circuit
divide by 2 circuit
divide by 5 circuit followed by divide by 2 circuit
BCD counter
⇒ Find equivalent capacitance if each capacitance is
5/12 F
12/5 F
6/5 F
5/6 F
⇒ In a JK master slave flip flop race condition does not occur.
TRUE
FALSE
⇒ A transmitter serial current contains
carrier frequencies
audio frequencies
radio frequencies
none of the above
⇒ An RL impedance function can also be realized as
RC impedance function
RC admittance function
LC impedance function
LC admittance function
⇒ Two coupled coils lie in parallel planes such that 50% of magnetic flux produced by one links the other. The coefficient of coupling is
0.5
0.25
0.125
0.5
⇒ Which of the following are included in the architecture of computer?
1 and 2
2 and 3
1 and 3
1, 2 and 3
⇒ In the given figure the line voltage after a number of reflections wil
30 V
-30 V
10 V
-10 V
⇒ The op-amp circuit shown in the figure is a filter. The type of filter and its cut off type of filter and its cut off frequency are respectiv
high Pass, 1000 rad/sec
low Pass, 100 rad/sec
high Pass, 10000 rad/sec
low pass, 10000 rad/sec
⇒ A transistor has a maximum power dissipation of 350 mW at an ambient temperature of 25°C. If derating factor is 2 mW/°C, the maximum power dissipation for 40°C ambient temperature is
300 mW
330 mW
350 mW
380 mW
⇒ The inverse response of a system h(n) = a^{n}∪(n) what is the condition for the system to be BIBO stable?
a is real and +ve
a is real and -ve
|a| > 1
|a| < 1
⇒ A current is flowing through a conductor with non-uniform area of cross-section. Then
current will be different at different cross-sections.
current will be the same at all the cross-sections.
current will be different but current density will be same at all the cross-sections
current will be the same but current density will be different at different cross-sections.
⇒ If x_{k} = 2^{k} for k ≤ 0 and = 0 for k > 0 X(z) = 2/(2 - z).
TRUE
FALSE
⇒ In the graphical analysis of an amplifier circuit, the slope of dc load line depends on
load resistance only
collector supply voltage only
both load resistance and collector supply voltage
none of the above
⇒ Figure repres
Integrator
Differentiator
High Pass Filter
Band Pass Filter
⇒ The input impedance of CRO is about
zero
10 Ω
100 Ω
one mega ohm
⇒ Figure shows current pulses of a class C power amplifier. The fundamental frequency of these pulse
100 kHz
1000 kHz
10 kHz
1 kHz
⇒ In the op-amp circuit of figure, V_{03 V1 - 4 V2-3 V1 + 4 V23(V1 - V2)-3(V1 - V2)}
⇒ A TRIAC is a semiconductor device which acts as a
2 terminal unidirectional switch
2 terminal bidirectional switch
3 terminal bidirectional switch
4 terminal multidirectional switch
⇒ In the full adder, denoting Sum by S and carry by C
S = 1 when two or more inputs are unity
C = 1 when two or more inputs are unity
C = 1 when all the inputs are unity
S = 1 when all the inputs are unity
⇒ Two products are sold from a vending machine, which has two push buttons P_{1} and P_{2}. When a button is pressed, the price of the corresponding product is displayed in a 7-segment display. If no buttons are pressed, '0' is displayed, signifying 'Rs' .0'. If only P_{1} is pressed, '2' is displayed, signifying 'Rs.
3 NOT and 4 OR
2 NOT and 4 OR
1 NOT and 3 OR
2 NOT and 3 OR
⇒ A 4 bit binary adder has 4 full adders.
TRUE
FALSE
⇒ Which distortion is least objectionable in case of audio amplifiers?
Phase distortion
Frequency distortion
Harmonic distortion
Inter-modulation distortion
⇒ If a capacitor is charged by a square wave current source the voltage across the capacitor is
triangular wave
step function
zero
square wave
⇒ In an AM system, doubling of modulation index doubles the antenna current. The system is
single side band full carrier
vestigial side band
single side band suppressed carrier
double side band full carrier
⇒ If an inductance L is connected in one arm of bridge and resistance R_{1}, R_{2}, R_{3} in other three arms
the bridge cannot be balanced
the bridge can be balanced
the bridge is balanced for some specified value of frequency
the bridge is balanced for some specific values of R_{1}, R_{2}, R_{3}
⇒ The device most likely to be found in an SSB transmitter is
class C audio amplifier
tuned modulator
class B RF amplifier
class A RF amplifier
⇒ In an n-type silicon crystal at room temperature, which of the following can have a concentration of 4 x 10^{19} cm^{-3}?
Silicon atoms
Holes
Dopant atoms
Valence electrons
⇒ The minimum value of h_{fe} of a transistor used in RC phase shift oscillator is
54.4
45.4
44.5
29
⇒ If reference sound pressure P_{0} is 2 x 10^{-5} N/m^{2}, a sound pressure of 90 dB is equal to
0.632 N/m^{2}
0.707 N/m^{2}
0.835 N/m^{2}
0.925 N/m^{2}
⇒ Symmetrical square wave of time period 100 μs can be obtained from square wave of time period 10 μs by using
divide by 5 circuit
divide by 2 circuit
divide by 5 circuit followed by divide by 2 circuit
BCD counter
⇒ Find equivalent capacitance if each capacitance is
5/12 F
12/5 F
6/5 F
5/6 F
⇒ In a JK master slave flip flop race condition does not occur.
TRUE
FALSE
⇒ A transmitter serial current contains
carrier frequencies
audio frequencies
radio frequencies
none of the above
⇒ An RL impedance function can also be realized as
RC impedance function
RC admittance function
LC impedance function
LC admittance function
⇒ Two coupled coils lie in parallel planes such that 50% of magnetic flux produced by one links the other. The coefficient of coupling is
0.5
0.25
0.125
0.5
⇒ Which of the following are included in the architecture of computer?
- Addressing mode, design of CPU
- Instruction set, data format
- Secondary memory, operating system
1 and 2
2 and 3
1 and 3
1, 2 and 3
⇒ In the given figure the line voltage after a number of reflections wil
30 V
-30 V
10 V
-10 V
⇒ The op-amp circuit shown in the figure is a filter. The type of filter and its cut off type of filter and its cut off frequency are respectiv
high Pass, 1000 rad/sec
low Pass, 100 rad/sec
high Pass, 10000 rad/sec
low pass, 10000 rad/sec