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. | When a wave reaches the open circuited end of a line |

A. | all the forward energy is reflected by the open circuit [Wrong Answer] |

B. | all the forward energy is absorbed by the open circuit [Wrong Answer] |

C. | a small portion of energy is radiated into atmosphere and the remaining energy is reflected [Correct Answer] |

D. | either (a) or (b) [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ Foster Seeley discriminator uses a

double tuned circuit in which primary and secondary are tuned to different frequencies

double tuned circuit in which primary and secondary are tuned to same frequencies

single tuned circuit

three triodes in series

⇒ Maximum effective aperture (A

_{e})max of short dipole antenna is

1.119 λ

^{2}

0.119 λ

^{2}

1.19 λ

^{2}

1.919 λ

^{2}

⇒

**Assertion (A):** In KVL equations involving mutually coupled circuits the sign of M terms can be positive or negative.

**Reason (R):** Dot convention helps in determining sign of M terms in KVL equations.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ A dielectric of relative permittivity ∈

_{r}is subjected to a homogeneous electric field E. The dipole moment P per unit volume is given by

P = constant

P = ∈

_{0}E

P = ∈

_{0}(∈

_{r}- 1) E

P = ∈

_{r}E

⇒ In static RAM 6264 the number of address inputs are

10

12

13

15

⇒ Which one of the systems described by the following I/P - O/P relations is time invariant

*y*(

*n*) =

*n*

*x*(

*n*)

*y*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1)

*y*(

*n*) =

*x*(-

*n*)

*y*(

*n*) =

*x*(

*n*) cos 2p

*f*

_{0}

*n*

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

phase shift oscillator

weinbridge oscillator

colpitt's oscillator

clapp oscillator

⇒ The units for electric dipole moment are

coulombs

colomb-metre

coulomb/metre

coulomb/m

^{2}

⇒ The Nyquist plot of a stable, transfer function

*G*(

*s*) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh

6 dB and 180°

3 dB and 180°

6 dB and 90°

3 dB and 90°

⇒ A line has L = 0.8 µH/

*m*and C = 32 pF/

*m*. Z

_{0}=

6000

600

158

15.8

⇒ In solid dielectrics the rate of deterioration doubles for every 10-12°C rise in temperature.

TRUE

FALSE

⇒ Hydrogen is used in

large size transformers

MCB

large size generators

circuit breakers

⇒ Consider the following DO statement in Fortran 77

11

10

4

⇒ The response shown in figur

over damped

critically damped

under damped

either (a) or (c)

⇒ The K-map for a Boolean function is shown in figure. The number of essential prime implicants for this functio

4

5

6

8

⇒ When a lead acid battery is fully charged the colours of its positive and negative plates are

grey and dark brown

dark grey and brown

grey and brown

dark brown and grey

⇒ The logic circuit given below converts a binary code

*y*

_{1}

*y*

_{2},

*y*

_{3}

Excess - 3 code

Gray code

BCD code

Hamming

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | IF noise | 1. | Ganged tuning |

B. | Image frequency | 2. | Spurious response |

C. | Station selector | 3. | Leaky filter capacitor |

D. | Excessive Hum | 4. | Mixer stage |

A-3, B-2, C-1, D-4

A-2, B-3, C-1, D-4

A-1, B-2, C-3, D-4

A-4, B-2, C-1, D-3

⇒ The output V

_{R}of the ratio detector is related with the output V

_{F}of similar Foster-Seeley discriminator as follows.

V

_{R}= V

_{F}

V

_{R}< V

_{F}

V

_{R}= 2V

_{F}

V

_{F}= 2V

_{R}

⇒ In an Anderson bridge the unknown inductance is measured in terms of

known inductance and resistance

known inductance

known capacitance and resistance

known capacitance

⇒ Consider the following rules in Fortran

- A signed or unsigned real variable name or a real constant is a real expression.
- Two real expressions connected by an arithmetic operator is a real expression.
- A real variable or constant exponential by an integer constant or integer variable is not valid

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ The most commonly used transistor amplifier circuit is

CB

CC

CE

CE or CC

⇒ Cassergain feed is used with a parabolic reflector to

increase the gain of the system

increase the beamwidth of the system

reduce the size of the main reflector

allow the feed to be placed at a convenient point

⇒ Which of the following can be used as a tachogenerator in control systems?

Microsyn

DC servomotor

AC servomotor

Magnetic amplifier

⇒ While calculating Norton's resistance, all current sources are short circuited.

TRUE

FALSE

⇒ The properties of FETs resemble closely to

UJT

current transformer

thyristor

thermionic valves

⇒ Half power point directions for broadside is

60°

30°

45°

at any angle

⇒ In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative

when power factor is less than 0.5 lagging

when power factor is greater than 0.5 lagging

when power factor is less than 0.5

when power factor is unity

⇒ Generally a servomotor operates at

high torque and high speed

low torque and low speed

low torque and high speed

high torque and low speed

⇒ Noise with uniform power spectral density of N

_{0}ω/H

_{z}is passed through a filter H(ω) = 2 exp (-J ω

*t*) followed by an ideal low pass filter of bandwidth B Hz. The output noise power in watts is

_{y}2 N

_{0}B

4 N

_{0}B

8 N

_{0}B

16 N

_{0}B