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. | The number of channels in a stereophonic system is |

A. | 8 [Wrong Answer] |

B. | 4 [Wrong Answer] |

C. | 2 [Correct Answer] |

D. | 1 [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 :**

⇒ The statement that the line integral of magnetic field about any closed path is exactly equal to the direct current enclosed by that path, is known as

Ampere's circuital law

Coulomb's law

Electrostatic's theory

None of the above

⇒ In a sequential circuit the output at any instant depends on

present inputs only

past inputs only

past outputs only

past output and present input

⇒ An op-amp uses

RC coupling

direct coupling

transformer coupling

either (b) or (c)

⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.

TRUE

FALSE

⇒ The polarities of the magnetised iron rod of

A is N, B is S and C is neutral

A is N, B is S and C is S

A is N, B is N and C is S

A is S, N is S and C is N

⇒ When a ferromagnetic substance is magnetised there are small changes in dimensions. This phenomenon is called

hysteresis

magnetostriction

diamagnetism

dipolar relaxation

⇒ The input to a parity detector is 1001. The output is

0

1

0 or 1

indeterminate

⇒ In a two phase servomotor the voltages applied to the two stator windings

are equal in magnitude and are in phase

are unequal in magnitude but are in phase

are equal in magnitude but have a phase difference of 90°

are unequal in magnitude and have a phase difference of 90°

⇒ In a radio receiver, the local oscillator is tuned to a frequency

lower than the incoming frequency

higher than the incoming frequency

equal to incoming frequency

any of the above

⇒ A two port network is symmetrical if

*z*

_{11}

*z*

_{12}-

*z*

_{12}

*z*

_{21}= 1

AD - BC = 1

*h*

_{11}

*h*

_{22}-

*h*

_{12}

*h*

_{41}= 1

*y*

_{11}

*y*

_{22}=

*y*

_{12}

*y*

_{21}= 1

⇒ The Hilbert transform of cos ω

_{1}

*t*+ sin ω

_{2}

*t*is

sin ω

_{1}

*t*+ cos ω

_{2}

*t*

sin ω

_{1}

*t*- cos ω

_{2}

*t*

cos ω

_{1}

*t*- cos ω

_{2}

*t*

sin ω

_{1}

*t*+ sin ω

_{2}

*t*

⇒ Which of the following modes cannot exist in rectangular resonant cavity?

TE

_{110}

TE

_{011}

TM

_{110}

TM

_{111}

⇒ A voltage of 9 V is applied in forward direction to a semiconductor diode in series with a load resistance of 1000 Ω. The voltage across the load resistance is zero. It indicates that

diode is short circuited

diode is open circuited

resistor is open circuited

diode is either o.c or s.c

⇒ In TV transmitter some possible advantages of IF modulation are

- The modulator section and visual exciter can be solid state devices
- VSB filter can be introduced at low power level
- The subsequent stages following VSB filter can be tuned permanently for wideband linear operation
- It is economical

1 and 2

1, 2 and 3

2, 3 and 4

1, 2, 3 and 4

⇒ In full wave rectification, if the input frequency is 50 Hz, then frequency at the output of filter is

50 Hz

0 Hz

100 Hz

75 Hz

⇒ A generated voltage is equally dependent on three resistances R

_{1}, R

_{2}, R

_{3}and its value is V = (R

_{1}R

_{2})/R

_{3}. If tolerance of each resistor is 0.1%, the maximum error in voltage is

0.003

± 0.3%

0.001

± 0.1%

⇒ VLF is generally used for

telegraphy

satellite communication

instrument landing system

all of the above

⇒ Which of the following Boolean Expression correctly represents the relation between P, Q, R and M

_{1M1 = (P OR Q) XOR RM1 = (P AND Q) XOR RM1 = (P NOR Q) XOR RM1 = (P XOR Q) XOR R}

⇒ In the circuit of figure the function of resistor R and diode D

to limit the current and to protect LED against over voltage

to limit the voltage and to protect LED against over current

to limit the current and protect LED against reverse breakdown voltage.

none of the above.

⇒ The scale of hot wire instrument is linear.

TRUE

FALSE

⇒ The discrete time system describes by

*y*(

*n*) =

*x*(

*n*

^{2}) is

casual, Linear, time varying

casual, non-linear, timevari

non-casual, Linear, time invariant

non-casual, non-linear, time variant

⇒ In figure

*v*

_{1}= 8 V and

*v*

_{2}= 8 V. Which diode will cond

D

_{1}only

D

_{2}only

Both D

_{1}and D

_{2}

Neither D

_{1}nor D

_{2}

⇒ Which of these commutation methods uses an external pulse for commutation?

Class A

Class C

Class E

Class F

⇒ The average value of wave in figur

90 V

75 V

60 V

50 V

⇒ In a D latch

a high D sets the latch and low D resets it

a low D sets the latch and high D resets it

race can occur

none of the above

⇒ A frequency multiplier stage should operate as

class A

class B

class AB

class C

⇒ The total number of channels allotted for cellular telephone is

666

333

221

111

⇒ In the following transistor circuit

*V*

_{BE}= 0. 7 V,

*r*= 25mV/I

_{c}_{E}, and β and the capacitance are very l

1 mA

2 mA

5 mA

10 mA

⇒ Advanced low power Schottky is a part of

ECL family

CMOS family

TTL family

none of the above

⇒ The Z parameters Z

_{11}and Z

_{21}for the 2-port network in the fig

Z

_{11}= - 6/

_{11}Ω; Z

_{21}= 16/

_{11}Ω

Z

_{11}= 6/

_{11}Ω; Z

_{21}= 4/

_{11}Ω

Z

_{11}= 6/

_{11}Ω; Z

_{21}= - 16/

_{11}Ω

Z

_{11}= 4/

_{11}Ω; Z

_{21}= 4/

_{11}Ω