The following components are used to measure power output of a 2 kW TWT amplifier:
| |
A. | 2 - 4 - 1 - 3 - 5 [Wrong Answer] |
B. | 1 - 3 - 4 - 2 - 5 [Correct Answer] |
C. | 1 - 2 - 4 - 3 - 5 [Wrong Answer] |
D. | 2 - 4 - 1 - 5 - 3 [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
⇒ In elemental dielectrics, the orientation and ionic polarization are absent.
TRUE
FALSE
⇒ The damping ratio of a pair of complex poles when expressed in terms of angle θ measured from jω axis equal to
sin θ
cos θ
tan θ
cot θ
⇒ Transfer function of a linear system is 200 e^{-j10ω} The system is a
distortionless Attenuator
amplifier with Phase distortion
distortionless Amplifier
attenuator with Phase distortion
⇒ In push pull amplifier, each transistor conducts for
180°
360°
90°
45°
⇒ The effective length of antenna is different from actual length due to
top loading
end effects
both (a) and (b)
none of the above
⇒
Assertion (A): In the circuit shown figure the diode is used to protect the active devices. Transistor T goes into saturation when a positive pulse is applied at base and non conducting
Reason (R): When the current in an inductor is suddenly stopped, a high voltage is induced across
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ Which of these instruments is dynamometers type?
Wattmeter
Power factor meter
Frequency meter
Both (a) and (b)
⇒ Two wires A and B have the same cross-section area and are made of the same material. R_{A} = 600 Ω and R_{B} = 100 Ω. The number of times A is longer than B is
6
2
4
5
⇒ In a Hurwitz polynomial
all coefficients are non-negative
the coefficients may be positive or negative
all coefficients are negative
all coefficients are non-negative and all zeros should be either in left half plane or simple on the imaginary axis
⇒ Iron has a body centred cubic structure.
TRUE
FALSE
⇒ Serial input data of 8085 can be loaded into bit-7 of the accumulator by
executing a RIM instruction
executing RSTI
using TRAP
none of the above
⇒ Q of a coil
- increases with Q increasing frequency
- varies linearly with frequency
- increase with increasing frequency because R increases at high frequency
- decrease after the peak frequency because R increases at H.F. the correct statements are
A, B
C, D
A, C
B, D
⇒ In a hi-fi system the nonlinear distortion should be less than
0.1
0.05
0.02
0.01
⇒ In molecules of ionic crystals, orientation polarization is zero.
TRUE
FALSE
⇒ The bandwidth of an amplifier can be reduced by
miller effect compensation
pole zero compensation
dominant pole compensation
lead compensation
⇒ The passband of the tuned circuits of a radio receiver should be equal to
20 kHz
455 kHz
1455 kHz
more than 455 kHz
⇒ The memory hierarchy in microprocessor based system is
register, cache, primary, mass, off line back up
cache, register, primary, mass, off line back up
cache, register, mass, primary, off line back up
register, cache, mass, primary, off line back up
⇒ At FM demodulator output noise power density
increases with frequency
decreases with frequency
remains unaltered
none of the above
⇒ The impulse response h(t) of a linear time-invariant continuous time system is described by h(t) = exp (at) u(t) + exp (βt) u (- t), where u(t) denotes the unit step function, and a and β are constants. This system is stable if
a is positive and β is positive
a is negative and β is negative
a is positive and β is negative
a is negative and β is positive
⇒ In an R-S latch, race condition occurs when
R is low and S is high
R and S are high
R and S are low
R is high and S is low
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Poles and zeros of lie an real axis driving point LC network | 1. | lie an real axis |
B. | Canonic LC network has | 2. | a zero |
C. | The number of Canonic networks for the given driving point function | 3. | minimum number of elements |
D. | The first critical frequency nearest the origin for RL driving point impedance | 4. | four |
5. | minimum number of elements | ||
6. | alternate | ||
7. | either a pole or zero | ||
8. | three |
A-1, B-5, C-8, D-7
A-6, B-5, C-3, D-2
A-1, B-5, C-4, D-2
A-1, B-3, C-4, D-7
⇒
Assertion (A): The use of 2's complement has simplified the computer hardware for arithmetic operations
Reason (R): 2's complement is obtained by adding 1 to 1's complement.
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
⇒ Colour picture tube needs higher anode voltage and needs larger beam and cathode currents than monochrome tube because
it is bigger in size
it has higher level of illumination
the tube has to illuminate three phosphors simultaneously
the tube has lower efficiency because of aperture mask
⇒ In AM increased depth of modulation increases __________ and in FM with increased depth of modulation __________ increases.
total transmitted power, bandwidth
bandwidth, bandwidth
bandwidth, total transmitted power
total transmitted power, sideband power
⇒
Assertion (A): Thermocouple instruments can be used for ac only.
Reason (R): Thermocouple instrument has a non linear scale.
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
⇒ A unit step function is used to represent the closing a switch in a constant voltage system.
TRUE
FALSE
⇒ The 8085 instruction LDA FFA is an example of
Direct addressing
Register addressing
Immediate addressing
Register indirect addressing
⇒ A transmission line has Z_{0} = 300 Ω and Z_{L} = (300 - j300) ohm. The transmission coefficient is
1.265 ∠ - 18.43°
1.01 ∠ - 10°
1.14 ∠ 66.68°
1.09 ∠ 66.68°
⇒ 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
⇒ Mouse is a very suitable input device for computers.
TRUE
FALSE