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 loss less transmission line is terminated in a load which reflects a part of the incident power. The measured VSWR is 2. The percentage of the power that is reflected back is |

A. | 57.73 [Wrong Answer] |

B. | 33.33 [Wrong Answer] |

C. | 0.11 [Wrong Answer] |

D. | 11.11 [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss 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 :**

⇒ In integral cycle control of ac regulators, the period of integral cycle control,

*i*.

*e*., (

*m*+

*n*) T should be

less than mechanical or thermal time constant of the system

more than the mechanical or thermal time constant of the system

more or less than the mechanical or thermal time constant

very high

⇒

**Assertion (A):** The gain of an FET amplifier can be changed by changing *g*_{m}

**Reason (R):** Most receivers use automatic gain control to counteract changes in volume caused by fading

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

⇒

**Assertion (A):** The rms value of *v* = 1 + sin ω*t* is 1.5

**Reason (R):** If *i* = I_{0} + I_{1m} sin ω_{1}*t* + I_{3m} sin 3ω_{1}*t*,

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

⇒

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

A. | Output of signal generator | 1. | Modulated |

B. | Error signal from a synchro | 2. | Digital |

C. | Output of a JK flip flop | 3. | Analog |

D. | Signal received by radar | 4. | Stoichastic |

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

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

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

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

⇒ Highest resistivity of the following is

nichrome

constantan

metal

manganin

⇒ The resolution of a 12-bit D/A converter using a binary ladder with + 10V as the full scale output will be

2.44 mV

3.50 mV

4.32 mV

5.12 mV

⇒ Zener diode is invariably used with

forward bias

reverse bias

either (a) or (b)

zero bias

⇒ A load commutated chopper circuit has

one thyristor

two thyristors

four thyristors

six thyristors

⇒ Which chopper circuit operates in quadrants 1 and 4?

A

B

D

E

⇒ Lowest resistivity of the following is

constantan

german silver

manganin

nichrome

⇒ As the temperature of an intrinsic semiconductor material is increased

additional holes are created in the conduction band

protons get excited

protons acquire charge

energy of the atom is increased

⇒ CC circuit is suitable for impedance matching.

TRUE

FALSE

⇒ Fourier transform is defined for

periodic

non-periodic

finite duration

all

⇒ For an R-C impedance function, the residues at all poles are

real

imaginary

real and positive

positive

⇒ Counterpoise is used in coils having

high resistivity

low resistivity

medium resistivity

both (b) and (c)

⇒ In a series RLC circuit for lower frequency power factor is ________

leading, Lagging

lagging, Leading

independent of frequency

same

⇒ 2's complement of binary number 0101 is

1011

1111

1101

1110

⇒ The capacitance of a parallel plate capacitor varies as per the equation C(

*t*) = C

_{0}(1 - cos ω

*t*). It is connected to a battery of V volts. The equation for current is

ωC

_{0}V (1 - cos ω

*t*)

ωC

_{0}V(1 - sin ω

*t*)

ωC

_{0}V (1 - sin 2ω

*t*)

ωC

_{0}V sin ω

*t*

⇒ The system in the given figur

type 0 system

type 1 system

type 2 system

type 3 system

⇒ A counter has a modulus of 10. The number of flip flops is

10

5

4

3

⇒ The drain characteristics of JFET in operating region, are

inclined upwards

almost flat

inclined downwards

inclined upwards or downwards

⇒

Match the following:

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

A. | lag compensation | 1. | Exterior of unit circle |z| = 1 |

B. | lead compensation | 2. | PD control |

C. | stability | 3. | Non-minimum phase |

D. | Instability | 4. | Left half s plane |

5. | PI control |

A-2, B-5, C-1, D-3

A-3, B-1, C-2, D-5

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

A-5, B-2, C-4, D-1

⇒ A 10 km long line has a characteristic impedance of 400 ohms. If line length is 100 km, the characteristic impedance is

4000 Ω

400 Ω

40 Ω

4 Ω

⇒ Which of these devices is used in relaxation oscillator?

UJT

SCR

DIAC

TRIAC

⇒ Three inductors each 30 mH are connected in delta. The value of inductance or each arm of equivalent star is

10 mH

15 mH

30 mH

90 mH

⇒ The maximum efficiency of class A amplifier is

1

0.818

0.5

0.4

⇒ With four Boolean variables, how many Boolean expressions can be performed?

16

256

1024 (1 K)

64K (64 x 1024)

⇒ Which of the following are difficult to be fabricated in a monolithic IC?

Inductors

Large capacitors

Small capacitors

Both (a) and (b)

⇒ The force in a magnetic field is given by F =

*qv*B

F and

*q*are perpendicular and

*v*and B are perpendicular

F and

*q*only are perpendicular to each other

F and

*v*, F and B are mutually perpendicular to each other and

*v*and B at any angle between them

All the four components are perpendicular to each other

⇒ The relation between thermal conductivity K (W/m/°C), heat flow density Q (watt/m

^{2}) and

*d*T/

*dx*(°C per metre) is

Q = K(

*d*T/

*dx*)

Q = - K(

*d*T/

*dx*)

K = Q(

*d*T/

*dx*)

*d*T/

*dx*= - QK