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Q1. | Which of these is the most recent display device? |

A. | LED [Wrong Answer] |

B. | LCD [Wrong Answer] |

C. | VF [Correct Answer] |

D. | (a) and (c) [Wrong Answer] |

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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 :**

⇒ In open circuit impedance parameters, the independent variables are

I

_{1}and I

_{2}

V

_{1}and V

_{2}

V

_{1}and I

_{1}

V

_{2}and I

_{2}

⇒ For a transistor the normal collector voltage is 12 V. If actually it is found to be + 28 V, the trouble could be

R

_{L}is open

R

_{E}is open

C

_{E}is shorted

C

_{E}is open

⇒ In a purely capacitive circuit, the current __________ the voltage by __________ .

lags, 0°

leads, 90°

lags, 90°

lags, 45°

⇒ A plane EM wave is travelling in an unbound loss less dielectric having μ

_{y}= 1 and ε

_{y}= 4, the time average Poynting vector of the wave is 5 W/m

^{3}. The phase velocity

*v*

_{p}(assuming velocity of light as 3 x 10

^{8}m/sec) is

1.5 x 10

^{8}m/sec

3 x 10

^{8}m/sec

2.5 x 10

^{8}m/sec

0.5 x 10

^{8}m/sec

⇒ Which one is not a valid subscripted variable?

KET(2

^{*}J, 3

^{*}1 - 4)

MET(J + 2, K - 4)

A (2 I)

VEL(I)

⇒ RMS value is always higher than average value.

TRUE

FALSE

⇒

Match the following:

List I (Symbol in java) | List II (Meaning) | ||
---|---|---|---|

A. | & | 1. | Logical AND |

B. | ˆ | 2. | AND |

C. | | | | 3. | XOR |

D. | & & | 4. | Logical OR |

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

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

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

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

⇒ Consider following statements :

- Maximum energy of electrons liberated photoelectrically is independent of light intensity
- Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

statement (1) is true and (2) is false

statement (1) and (2) both are true

statement (1) is false and (2) is true

statement (1) and (2) both are false

⇒ A 1000

*k*H

*z*carrier wave modulated 40% at 4000 H

*z*is applied to a resonant circuit tuned to a carrier frequency and having Q = 140. What is the degree of modulation after transmission through this circuit?

0.4

0.2

0.27

0.54

⇒

Match the following:

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

A. | 200 MHz | 1. | SHF |

B. | 20 GHz | 2. | UHF |

C. | 500 kHz | 3. | VHF |

D. | 500 MHz | 4. | MF |

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

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

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

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

⇒ The quiescent collector current I

_{C}, and collector to emitter voltage V

_{CE}in a CE connection are the values when

ac signal is zero

ac signal is low

ac signal is negative

either (a) or (b)

⇒ In figure, capacitor is uncharged. The switch is closed at

*t*= 0 at

*t*= 0

^{+}

*di*/

*dt100 A/s*

-100 A/s

1000 A/s

-1000 A/s

-100 A/s

1000 A/s

-1000 A/s

⇒ In a purely resistive circuit the instantaneous power varies from zero to maximum twice in each cycle.

TRUE

FALSE

⇒ The maximum counting range of a four stage counter using IC 74193 is

0 to 1023

0 to 4093

0 to 65535

0 to 131071

⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be

2.5 mH

5 mH

20 mH

40 mH

⇒ Unit step is a

energy signal

power signal

neither energy nor power signal

none

⇒ Robotic manipulator arms mostly use

hydraulic actuator

pneumatic actuator

electric motor actuator

none of the above

⇒ In terms of classical representation of electrons

an atom is essentially empty

an atom is essentially full

an atom may be essentially empty or full depending on the material

an atom may be essentially empty or full depending on temperature

⇒ The critical frequency of 'F' layer is greater than 30 MHz.

TRUE

FALSE

⇒ For an ideal noise free transistor amplifier the noise factor is

zero

zero dB

1 dB

depends on other factors

⇒ Single parity check is not reliable in case of

paper tape

magnetic tape

magnetic drum

cores

⇒ For a wave

TRUE

FALSE

⇒ The equivalent inductance measured between the terminals 1 and 2 for the circuit shown in the figur

L

L

L

L

⇒ If the differential voltage gain and the common mode voltage gain of a differential amplifier are 48 dB and 2 dB respectively, then its common mode rejection ratio is

23 dB

25 dB

46 dB

50 dB

⇒ If the open-loop transfer function is a ratio of a numerator polynomial of degree '

breakaway points

unstable poles

separate root loci

asymptotes

⇒ Which component is allowed to pass through it by a choke filter?

Dc

Ac

Both dc and ac

Only high frequency ac

⇒ Find equivalent resistance. Each resistance is l &Om

5/12 Ω

5/6 Ω

6/5 Ω

6/10 Ω

⇒ Which mode is usually preferred for cascading?

CE

CB

CC

Any of the above

⇒ Higher order TDM levels are obtained by

forming super master groups

using A law

using μ law

dividing pulse width

⇒ Read the following statements about TWT

1, 2, 3 and 4

1, 2 and 3

1, 3 and 4

1, 2 and 4

⇒ In a purely resistive circuit the instantaneous power varies from zero to maximum twice in each cycle.

TRUE

FALSE

⇒ The maximum counting range of a four stage counter using IC 74193 is

0 to 1023

0 to 4093

0 to 65535

0 to 131071

⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be

2.5 mH

5 mH

20 mH

40 mH

⇒ Unit step is a

energy signal

power signal

neither energy nor power signal

none

⇒ Robotic manipulator arms mostly use

hydraulic actuator

pneumatic actuator

electric motor actuator

none of the above

⇒ In terms of classical representation of electrons

an atom is essentially empty

an atom is essentially full

an atom may be essentially empty or full depending on the material

an atom may be essentially empty or full depending on temperature

⇒ The critical frequency of 'F' layer is greater than 30 MHz.

TRUE

FALSE

⇒ For an ideal noise free transistor amplifier the noise factor is

zero

zero dB

1 dB

depends on other factors

⇒ Single parity check is not reliable in case of

paper tape

magnetic tape

magnetic drum

cores

⇒ For a wave

*v*= V_{1m}sin (ω*t*+ θ_{1}) - V_{3m}sin (3ω*t*+ θ_{3}), the rms value is (0.5 V^{2}_{1m}+ 0.5 V^{2}_{3m})^{0.5}TRUE

FALSE

⇒ The equivalent inductance measured between the terminals 1 and 2 for the circuit shown in the figur

L

_{1}+ L_{2}+ ML

_{1}+ L_{2}- ML

_{1}+ L_{2}+ 2ML

_{1}+ L_{2}- 2M⇒ If the differential voltage gain and the common mode voltage gain of a differential amplifier are 48 dB and 2 dB respectively, then its common mode rejection ratio is

23 dB

25 dB

46 dB

50 dB

⇒ If the open-loop transfer function is a ratio of a numerator polynomial of degree '

*m*' and a denominator polynomial of degree '*n*', then the integer (*n*-*m*) represents the number of:breakaway points

unstable poles

separate root loci

asymptotes

⇒ Which component is allowed to pass through it by a choke filter?

Dc

Ac

Both dc and ac

Only high frequency ac

⇒ Find equivalent resistance. Each resistance is l &Om

5/12 Ω

5/6 Ω

6/5 Ω

6/10 Ω

⇒ Which mode is usually preferred for cascading?

CE

CB

CC

Any of the above

⇒ Higher order TDM levels are obtained by

forming super master groups

using A law

using μ law

dividing pulse width

⇒ Read the following statements about TWT

- It uses thermionic emission.
- It uses an attenuater.
- It is inherently a resonant device.
- It has broad bandwidth.

1, 2, 3 and 4

1, 2 and 3

1, 3 and 4

1, 2 and 4