Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | A transmission line of characteristic impedance z_{0} = 50 Ω. Phase Velocity = 2 x 10^{8} m/sec, and length l = 1 m is terminated by a load z_{1} = (30 - j 40) ohms. The input impedance of the line for a frequency of 100 MHz will be |

A. | (30 + j x 40) Ω [Wrong Answer] |

B. | (30 - j 40) Ω [Correct Answer] |

C. | (50 + j x 40) Ω [Wrong Answer] |

D. | (50 - j 40) Ω [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Which power amplifier can deliver maximum load power?

Class A

Class AB

Class B

Class C

⇒ When Z

_{1}<< Z, The circuit of figure work

inverting amplifier

Schmitt trigger

non-inverting amplifier

source follower

⇒ The shape of torque-speed curve of a two phase servo- motor mostly depends on

ratio of rotor reactance to rotor resistance

ratio of stator reactance to rotor resistance

ratio of rotor reactance to rotor resistance and also the ratio of stator reactance to stator resistance

magnitude of stator voltages

⇒ A medium is said to be isotropic when

∈ = 0

∈ = μ

∈ = σ

∈ is scalar constant

⇒ Which op-amp circuit uses a diode as one of the circuit components?

Integrating amplifier

Differentiating amplifier

Logarithmic amplifier

Summing amplifier

⇒ Stepper motors find applications in

X-Y plotters

numerically controlled machining equipment

printers

all of the above

⇒ The minterm designation for ABCD is

m

_{8}

m

_{10}

m

_{14}

m

_{15}

⇒ The resonance frequency of the circui

5.4 K

*n*

_{2}

4.5 K

*n*

_{2}

5 K

*n*

_{2}

∞

⇒ In microprocessor 8088

8 data bits are multiplexed with 8 least significant bits of address bus

8 data bits are multiplexed with 8 most significant bits of address bus

16 data bits are multiplexed with 16 bits of address bus

none of the above

⇒ Which of the following amplifiers has highest output impedance?

CE

CB

CC

Push pull

⇒ Which binary addition is incorrect?

1001.1 + 1011.01 = 10100.11

100010 + 1000101 = 1001010

0.0011 + 0.1110 = 1.1

1011.01 + 1001.11 = 10111

⇒ A variable resistance R and capacitive reactance X

_{C}are connected in series. As R is varied, the locus of Z is

a straight line parallel to Y axis in 4th quadrant

a straight line parallel to X axis in 4th quadrant

a straight line parallel to Y axis in second quadrant

a straight line parallel to Y axis in first quadrant

⇒ In FM 'guard band' is provided

to limit upper frequency limit

to limit lower frequency limit

so that there is less adjacent channel interference

to limit transmitted power of a station

⇒ Out of SAM and RAM

access time in both does not depend on address location

in SAM access time depends on address location but not in RAM

in RAM access time depends on address location but not in SAM

in both the access time depends on storage location

⇒ A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/

*f*is constant. At 50 Hz, the speed is 1440 rpm. At 25 Hz, the speed is likely to be

about 1350 rpm

about 720 rpm

about 360 rpm

either (b) or (c)

⇒ If two time varying signals of equal magnitude and zero phase displacement are applied to X and Y plates respectively; of CRO, the display will be

a straight line

a circle

an ellipse

a square

⇒ The dual of a node is

mesh

principal node

tree branch

link

⇒ The depletion layer across a P

^{+}

*n*junction lies

mostly in the P

^{+}region

mostly in

*n*region

equally in both the P

^{+}and

*n*-region

entirely in the P

^{+}region

⇒ An RLC series circuit is underdamped. To make it overdamped, the value of R

has to be increased

has to be decreased

has to be increased to infinity

has to be reduced to zero

⇒ For generating 1 MHz frequency signal, the most suitable circuit is

phase shift oscillator

weinbridge oscillator

colpitt's oscillator

clapp oscillator

⇒

**Assertion (A):** Diamond and carborudum are both very hard materials.

**Reason (R):** Valence band can be extremely strong.

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 but R is false

A is false but R is true

⇒ A silicon PN junction with no bias have a doping concentration

3.345 x 10

^{-3}cm

3.345 x 10

^{-4}cm

3.345 x 10

^{-5}cm

3.345 x 10

^{-6}cm

⇒ A series RL circuit is excited by a voltage

*v*(

*t*) = V

_{m }sin (ω

*t*+ Φ). The transient current will be zero if

Φ = 0

ω = 0

Φ = tan

^{-1}(ωL/R)

ω - tan

^{-1}(ωL/R) = p/2

⇒ In a certain network not containing any dependent sources, number of nodes = 4 and number of branches is equal to 6.

4

2

3

5

⇒ Which of the following is correct?

*y*

_{22}=

*z*

_{22}/|

*z*|

*y*

_{11}=

*z*

_{22}/|

*z*|

*z*

_{11}=

*y*

_{11}/|

*y*|

*z*

_{22}=

*y*

_{22}/|

*y*|

⇒ A + 1.9 lens has a focal length of 25 mm. The diameter of lens is about

13 mm

1.3 mm

130 mm

none of the above

⇒ Resistivity of metals is expressed in terms of

μ ohm

μ ohm/cm

μ ohm-cm

μ ohm-cm/°C

⇒ Consider the following:

- Coupling capacitor
- Emitter by-pass capacitor
- Emitter to base diffusion capacitance of the BJT
- Stray capacitance of the circuit.

1 and 2

2 and 3

3 and 4

l and 4

⇒ During testing of an energy meter, the energy recorded by meter was 0.05 kWh and correct energy was found to be 0.09 kWh. The error and correction respectively are

-0.01 kWh and 0.01 kWh

0.01 kWh and -0.01 kWh

-0.01 kWh and ± 0.01 kWh

± 0.01 kWh and 0.01 kWh

⇒ The function of a modulator is to

separate two frequencies

extract information from the carrier

amplify the audio frequency signal

impress the information on to a RF carrier