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Q1. | Special circuits using neon tubes, contact relays and capacitors are used in many domestic appliances. The role of capacitor in figure i |

A. | reduce power loss [Wrong Answer] |

B. | function as resistor when relay is on [Wrong Answer] |

C. | delay the operation of the contact relay after switching on [Correct Answer] |

D. | open circuit the relay terminals [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 :**

⇒ For a BJT a = 0.98, then β =

0.02

0.5

4.9

48

⇒ The inductance of a coil can be increased by

choosing core material having high relative permeability

decreasing diameter of the former

decreasing the number of turns

increasing core length

⇒ In a shift left register, shifting a bit by one bit means

division by 2

multiplication by 2

subtraction of 2

None of the above

⇒ A major advantage of TWT over a Klystron lies in its

higher bandwidth

higher gain

higher frequency

higher output

⇒ In metals the thermal conductivity

*K*and electrical conductivity σ are related as (K/σT) = L, L is known as

Lattice constant

Lorentz number

Lanevin function

Larmor number

⇒ Strip lines are used at

microwave frequency

low frequency

High frequency

at any frequency

⇒ At midband frequencies the coupling capacitor in RC coupled CE amplifier may be considered as

open circuit

short circuit

a reactance equal to load resistance

none of the above

⇒ An extrinsic semiconductor sample has 6 billion silicon atoms and 3 million pentavalent impurity atoms. The number of electrons and holes is

3 million each

6 billion each

3 million free electrons and very small number of holes

3 million holes and very small number of free electrons

⇒ The hex number EB

_{16}represents binary number of

11101011

10010110

10101100

11101011

⇒ For the system of the given figure, the damping ratio of closed loop pole

1.5

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⇒ In which of the transformer is the secondary nearly short circuited under normal operating conditions?

CT

PT

Distribution transformer

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⇒ Consider the CMOS circuit shown, where the gate voltage V

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_{0x}(W/L), is 1mA. V

^{-2Both the MOSFET are in saturation regionBoth the MOSFET are in triode regionn-MOSFET is in triode and p-MOSFET is in saturation regionn-MOSFET is in saturation and p-MOSFET is in triode region}

⇒ In a linear op-amp circuit

the product of gain and bandwidth is constant

input can be dc only

input can be ac only

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⇒ For the logic circuit given, what is the simplified Boolean funct

X = AB + C

X = BC + A

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X = AC + B

⇒ Rotation of a geosynchronous satellite means its

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wobbling

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three-dimensional stabilization

⇒ In colour TV system the colour sub carrier frequency is 4.43 MHz.

TRUE

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⇒ The velocity of electromagnetic wave in a good conductor is

3 x 10

^{8}m/s

more than 3 x 10

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⇒ In a CE amplifier the dc load line is the same as ac load line when

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⇒ The damping coefficient for the given circuit is _______

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42739

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⇒ 25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:

2

17

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⇒ In the op-amp circuit of figure, V

_{03 V1 - 4 V2-3 V1 + 4 V23(V1 - V2)-3(V1 - V2)}

⇒ The signal to noise ratio in telemetry should be better than

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10 db

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⇒ The triangular wave of the given figure can be written as

*v*(

*t*) =

*u*(

*t*) -

*tu*(

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*t*- 1)

*u*(

*t*

TRUE

FALSE

⇒ For static electric and magnetic fields in an homogenous source-free medium, which of the following represents the correct form of Maxwell's equations?

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Δ x E = 0

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⇒ The number of address lines in EPROM 4096 x 8 is

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⇒ When the channel is noisy, producing a conditional probability of error

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⇒

Match the following:

List I (DOS commands) | List II (Meaning) | ||
---|---|---|---|

A. | DBLSPACE | 1. | Deletes a director and its sub-directories |

B. | MEM | 2. | Displays the amount of used and free memory |

C. | SYS | 3. | Put a copy of DOS on disk |

D. | DELTREE | 4. | Compresses files to increase the storage capacity of disc |

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

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

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

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

⇒ Consider the following statements

- Acceptor level lies close the valence band.
- Donor level lies close to the valence band.
*n*type semiconductor behaves as an insulator at 0 K.*p*type semiconductor behaves as an insulator at 0 K.

2 and 3 are correct

1 and 3 are correct

1 and 4 are correct

3 and 4 are correct

⇒ When a dc chopper feeds an RLE load, the load current, during steady state operation

remains constant

varies between maximum and minimum values

may remain constant or vary

is constant if R is constant