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Q1. | If R_{T}, R_{h} represent condition for reciprocity in case of transmission parameter and hybrid parameter respectively and similarly S_{T}, S_{h} represent condition for symmetry in case of transmission parameter and hybrid parameter respectively then match the followi |

A. | 1 - c 2 - d 3 - a 4 - f [Correct Answer] |

B. | 1 - c 2 - b 3 - e 4 - d [Wrong Answer] |

C. | 1 - e 2 - d 3 - a 4 - b [Wrong Answer] |

D. | 1 - e 2 - d 3 - a 4 - f [Wrong Answer] |

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^{0.5}is

4∠64°

4∠8°

4∠128°

4∠32°

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Match the following:

List I (Devices) | List II (characteristic) | ||
---|---|---|---|

A. | BJT | 1. | Voltage controlled negative resistance |

B. | MOSFET | 2. | High current gain |

C. | Tunnel diode | 3. | Voltage regulation |

D. | Zener diode | 4. | High input impedance |

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Z

Z

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Z

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both (b) and (c)

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rectangular

triangular

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100 m

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⇒ Microwave links are typically 50 km apart

because of atmospheric attenuation

because of output tube power limitation

because of earth's curvature

to ensure that applied

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^{8}m/sec⇒ Coulomb friction is

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the force of friction between moving surfaces separated by viscous fluid

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all of the above

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3

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TRUE

FALSE

⇒ The typical squelch circuit

cuts off IF amplifier when AGC is minimum

cuts off IF amplifier when AGC is maximum

cuts off audio amplifier when carrier is absent

eliminates RF interference when signal is weak

⇒ The V

_{TH}at terminals A and B is equal0 V

5 V

- 5 V

None of these

⇒ For measuring mutual inductance we can use

Anderson bridge

Maxwell's bridge

Heaviside bridge

Either (a) or (b)

⇒ What is output 'Z' of an EX-OR gate, whose all inputs are set at A?

Z = A

Z = 1

Z = 0

Z = A

⇒ Whether a linear system is stable or unstable that it

is a property of the system only

depends on the input function only

both (a) and (b)

either (a) or (b)

⇒ The diameter and thickness of CD are

6 cm and 1.2 mm

6 cm and 0.6 mm

12 cm and 0.6 mm

12 cm and 1.2 mm

⇒ A capacitor can be represented by a capacitance and resistance in parallel. For a good capacitor, this parallel resistance should be

negligible

low

high

very high

⇒ The dc output voltage from a power supply

increases with higher values of filter capacitance and decreases with more load current

decreases with higher values of filter capacitance and increases with more load current

decreases with higher values of filter capacitance as well as with more load current

increases with higher values of filter capacitance as well as with more load current

⇒ Ferrities are particularly suited for high frequency applications because of their

low distortion

low eddy current loss

high conductivity

high mobility