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 disadvantage of direct coupled amplifiers is |

A. | drift [Correct Answer] |

B. | large size of transistor [Wrong Answer] |

C. | low voltage gain [Wrong Answer] |

D. | both (b) and (c) [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ A 3 stage Johnson counter shown in figure is clocked at a constant frequency of

*f*

_{c}from the starting state of Q

_{0}Q

_{1}Q

_{2}= 101. The frequency of output Q

_{0}Q

_{1}Q

_{2}wil

*f*/2

_{c}*f*/3

_{c}*f*/6

_{c}*f*/8

_{c}⇒ At absolute temperature

the forbidden energy gap in germanium is higher than that in silicon

the forbidden energy gap in germanium and silicon are equal

the forbidden energy gap in silicon is higher than that in germanium

none of the above

⇒ For a MOD-12 counter, the FF has a

*t*= 60 ns The NAND gate has a

_{pd}*t*of 25 n sec. The clock frequency is

_{pd}3.774 MHz

> 3.774 MHz

< 3.774 MHz

4.167 MHz

⇒ What would be the reading of voltmeter as shown in below figure. The voltmeter has a 0-1 V scale and is a 20000 Ω/V me

0.4545 V

0.082 V

0.82 V

4.54 V

⇒ Consider the following statem

2 and 3

1 only

2 and 4

none

⇒ Some sources of TV programs are

- TV camera
- Telecine
- VTR
- External signal

1, 2, 3 and 4

1, 2, 3

1 and 3

1 2 and 4

⇒ An homogeneous dielectric material is subjected to an electric field E. If a small cavity is made inside the material, the electric field intensity inside and outside the cavity are different.

TRUE

FALSE

⇒ What will be conversion time of a successive approximation A/D converter which uses 2 MHz clock and 5 bit binary ladder containing 8 V reference.?

2.5 μ sec

25 μ sec

3 μ sec

4 μ sec

⇒ A 20 m antenna gives a certain uplink gain at frequencies of 4/6 GHz. For getting same gain in the 20/30 GHz band, antenna size required is metre.

100

4

1

10

⇒ Let JCOKE = 3 and LPEPSI = 5. Consider the statement

1

15

10

⇒ A voltage v = 5 + 50 sin ω

*t*/ + 5 sin 5 &omega

*t*is applied to a pure capacitor of capacitance 1 ωF. If

*f*/= 314 rad/sec, current is

1 + 0.0157 cos 314

*t*+ 0.00785 cos 1570

*t*

0.0157 cos 314

*t*+ 0.00785 cos 1570 t

0.0157 sin 314

*t*+ 0.00785 sin 1570

*t*

0.0157 sin (314

*t*/ + 45°) + 0.00785 sin (1570

*t*+ 45°)

⇒ For an RC impedance function Z

Z(∞) = Z(0)

Z(∞) < Z(0)

Z(∞) ≤ Z(0)

Z(∞) > Z(0)

⇒ In a synchro transmitter

input is angular position of rotor shaft and output is stator voltages

input is stator voltages and output is angular position of shaft input is rotor voltage and output is angular position of rotor shaft

input is rotor voltage and output is angular position of rotor shaft

input is angular position of rotor shaft and output is rotor voltage

⇒ As compared to an ordinary semiconductor diode, a Schottky diode

has lower cut in voltage

has higher cut in voltage

lower reverse saturation current

both (b) and (c)

⇒ The numbers of accelerating anodes in a CRO is

1

2

3

4

⇒ The transfer function V

_{2}/V

_{1}for figure

a zero at origin

a zero at infinity

no zero

a zero at

*j*1

⇒ RMS value of a square wave is the same as peak value.

TRUE

FALSE

⇒ The 4 point Discrete Fourier Transform (DFT) of a discrete time sequence {1, 0, 2, 3} is

[0, - 2 + 2

*j*, 2, - 2 - 2

*j*]

[2, 2 + 2

*j*, 6, 2 - 2

*j*]

[6, 1 - 3

*j*, 2, 1 + 3]

[6, - 1 + 3

*j*, 0, - 1 - 3

*j*]

⇒ In the synthesis of RLC network

the number of elements in Bott-Duffin synthesis and Brune's synthesis are always equal

the number of elements in Bott-Duffin synthesis is more than that in Brune's synthesis

the number of elements in Bott-Duffin synthesis is less than that in Brune's synthesis

the number of elements in Bott-Duffin synthesis may be more or less than that in Brune's synthesis

⇒ Each cell of a static Random Access memory contains

6 MOS transistor

4 MOS transistor, 2 capacitor

2 MOS transistor, 4 capacitor

1 MOS transistor and 1 capacitor

⇒ Find 'X' in the circuit be

∏(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)

0

Σ(14)

1

⇒ For air filled circular waveguides

the attenuation due to imperfect conducting walls is negligible

the attenuation due to imperfect dielectric is negligible

both the attenuation i.e. due to imperfect conducting walls and due to imperfect dielectric are significant

the total attenuation is almost zero

⇒ The first and the last critical frequencies (singularities) of a driving point impedance function of a passive network having two kind of elements, are a pole and a zero respectively. The above property will be satisfied by

RL network only

RC network only

LC network only

RC as well as RL network

⇒ The waveguides compared to equivalent transmission lines at low frequency are

able to carry more power

less noisy

having lower attenuation

all of the above

⇒ If C is thermal capacitance,

*m*is mass of liquid and

*c*is specific heat, then

C =

*mc*

*c*=

*m*C

*m*=

*c*C

C = (

*mc*)

^{2}

⇒ In AM the amplitude of carrier components ... while in FM it

remains constant, does not remain constant

does not remain constant ... remains constant

remains constant... also remains constant

does not remain constant, also does not remain constant

⇒ In the NMOS inverter

the driver and active load are enhancement type

driver is enhancement type and load depletion type

driver is depletion type and load enhancement type

both driver and load are depletion type

⇒ What is meant by "continuous collector current" in BJT?

Maximum collector current

Current at Quiescent condition

Leakage current

Junction Capacitance charging and discharging current

⇒ A narrow band noise n(

*t*) has symmetrical spectrum and has power density spectrum 0.2 x 10

^{-6}. The power density of quadrature component is

0.2 x 10

^{-6}

10

^{-7}

4 x 10

^{-7}

5 x 10

^{-8}

⇒

Match the following:

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

A. | Detection of a periodic signal in noise | 1. | Increase in band-width |

B. | Recovery of a band limited signal from its uniformly sampled values | 2. | Slope over load error |

C. | Finer quantization | 3. | Nyquist rate of signals |

D. | Delta modulation | 4. | Cross correlation |

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

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

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

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