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Q1. | Which of the following logic family is fastest of all? |

A. | TTL [Wrong Answer] |

B. | RTL [Wrong Answer] |

C. | DCTL [Wrong Answer] |

D. | ECL [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 :**

⇒ A signal

*m*(

*t*) with bandwidth 500 Hz is first multiplied by a signal

*g*(

*t*) w

δ(

*t*)

*m*(

*t*)

0

*m*(

*t*) δ(

*t*)

⇒ When an electron breaks a covalent bond and moves away,

a hole is created

a proton is also lost

atom becomes an ion

rest of the electron move at a faster rate

⇒ An incremental model of a solid state device is one which represents the

ac property of the device at desired operating point

dc property of the device at all operating points

complete ac and dc behaviour at all operating points

ac property of the device at all operating points

⇒ A 24 mm long conductor has a resistance of 128 Ω. The change in resistance is 13.3 Ω and change in length is 1.6 mm under tension. The gauge factor is

1.2

1.6

2.1

2.6

⇒ For a photoconductor with equal electron and hole mobilities and perfect ohmic contacts at the ends, an increase in illumination results in

a change in O.C. voltage

a change in S.C. current

a decrease in resistance

an increase in resistance

⇒ The current through a resistance

*R*is shown in figure. The computed value of power

400 ± 0.42 W

400 ± 4.6 W

400 ± 8.85 W

400 ± 10.65 W

⇒ Leak type bias is used in plate modulated class C amplifier to

increase the bandwidth

prevent over modulation

prevent excessive grid current

prevent tuned circuit damping

⇒ Which of the following functions would have only odd powers of

*x*in its Taylor series expansion about the point

*x*= 0?

sin (

*x*

^{3})

sin (

*x*

^{2})

cos (

*x*

^{3})

cos (

*x*

^{2})

⇒ The block diagram of AM transmitter in which high level modulation is used as shown in figure. The block X could

audio power amplifier

buffer RF amplifier

compressor amplifier

none of the above

⇒

**Assertion (A):** In two wattmeter method of 3 phase power measurement, one of the wattmeters would read negative if power factor of load is less than 0.5.

**Reason (R):** In two wattmeter method of 3 phase power measurement, both the wattmeters would show equal readings if power factor of load is unity.

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 R is false

A is false R is true

⇒ The phase angle curve of G(

*j*ω) H(

*j*ω) can be drawn

by adding the phase angle curves of individual factors

by subtracting the phase angle curves of individual factors

by multiplying the phase angle curves of individual factors

by dividing the phase angle curves of individual factors

⇒ In saturation region JFET acts like a

bipolar device

short circuit

switch

resistance

⇒ Which one is a causal system?

*y*(

*n*) = 3

*x*[

*n*] - 2

*x*[

*n*- 1]

*y*(

*n*) = 3

*x*[

*n*] + 2

*x*[n + 1]

*y*(

*n*) = 3

*x*[

*n*+ 1] + 2

*x*[

*n*- 1]

*y*(

*n*) = 3

*x*[

*n*+ 1] 2

*x*[

*n*- 1] +

*x*[

*n*]

⇒ A coil with large distributed capacitance has a

high resonant frequency

low resonant frequency

low quality factor

low resistance

⇒ Heat sink results in

slower dissipation of heat to atmosphere

faster dissipation of heat to atmosphere

lower ambient temperature

lower transistor power

⇒ A single phase half wave controlled rectifier circuit has a free wheeling diode. The load is a combination of R and L. The firing angle is a. The period of conduction of SCR and free wheeling diode respectively are

a < ω

*t*< p and p < ω

*t*< (2p + a)

a < ω

*t*< p and p < ω

*t*< 2p

a < ω

*t*< (p + a) and (p + a) < ω

*t*< 2p

a < ω

*t*< p and p < ω

*t*< (2p - a)

⇒ A voltage

*v*= 100 sin ω

*t*+ 10 sin 5 ω

*t*is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is

0.0314 cos 314

*t*+ 0.0157 cos 1570

*t*

0.0314 sin 314

*t*+ 0.0157 sin 1570

*t*

0.0314 cos 314

*t*+ 0.0314 cos 1570

*t*

0.0157 cos 314

*t*+ 0.0157 cos 1570

*t*

⇒ Maximum usable frequency is [

*f*

_{muf}]

*f*sec

_{c}*i*

*f*cos

_{c}*i*

*f*sin

_{c}*i*

*f*sec

_{c}*i*

⇒ For ideal performance, a filter should be terminated in characteristic impedance.

TRUE

FALSE

⇒ If modulus is less than 2

^{N}, some states of the counter are skipped by using NAND gates.

TRUE

FALSE

⇒ To draw dc equivalent circuit for a CE amplifier circuit we should

Reduce all ac sources to zero

Open all capacitors

Reduce all ac sources to zero and open all capacitors

Reduce all ac sources to zero and short all capacitors

⇒ 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°

⇒ For a P-N junction diode, the current in reverse bias may be

few amperes

between 0.5 A and 1 A

few milliamperes

few micro or nanoamperes

⇒ In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° is

200 μC

400 μC

50 μC

25 μC

⇒ An FM transmitter delivers 80W to a load of 30 W when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given out

84 W

97.44 W

100 W

77.44 W

⇒ The

*z*transform of sequence

*x*[

*n*] = {2, 4, 3, 2}

2

*z*

^{-1}+ 4

*z*

^{-2}+ 3 + 2

*z*

^{+1}

2

*z*

^{-1}+ 3 + 4

*z*

^{+1}+ + 2

*z*

^{+2}

2

*z*

^{+1}+ 3

*z*

^{-1}+ 4

*z*

^{-2}+ 2

*z*

^{-3}

3 + 2

*z*

^{-1}+ 4

*z*

^{-2}+ 2

*z*

^{-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*+ cos ω

_{2}

*t*

⇒ As the frequency increases, the absorption of ground wave by earth's surface

decreases

increases

remains the same

either (a) or (c)

⇒ A failure rate of 0.01 percent in 1000 hours in a memory corresponds to an MTBF of

1000 hours

100000 hours

10 hours

100 hours

⇒ A two stage amplifier has an upper cutoff frequency of 2 MHz and a lower cutoff frequency of 2 MHz and a lower cut off frequency of 30 Hz. If both stages are similar, their individual upper and lower cut off frequencies respectively are

4 MHz and 60 MHz

3 MHz and 20 Hz

3 MHz and 60 Hz

4 MHz and 20 Hz