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Q1. | The operating voltage of a megger is about |

A. | 100 V [Correct Answer] |

B. | 12 V [Wrong Answer] |

C. | 6 V [Wrong Answer] |

D. | 1 V [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 :**

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

ac collector resistance and dc collector resistance are equal

ac collector resistance and dc emitter resistance are equal

ac collector resistance is very high

ac collector resistance is one half of dc collector resistance

⇒

Match the following:

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

A. | TTL | 1. | Low propagation delay |

B. | ECL | 2. | Low power consumption |

C. | MOS | 3. | High packing density |

D. | CMOS | 4. | Saturated bipolar logic |

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

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

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

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

⇒ The length of half-wave antenna is at 30 MHz

2.5 meter

5 meter

10 meter

100 meter

⇒

Match the following:

List I (Properties) | List II (Relations) | ||
---|---|---|---|

A. | Linear but NOT time-invariant | 1. | y(t) = t^{2}x(t) |

B. | Time-invariant but NOT linear | 2. | y(t) = t |x(t)| |

C. | Linear and time invariant | 3. | y(t) = |x(t)| |

4. | y(t) = x(t - 5) |

A-1, B-3, C-4

A-2, B-3, C-4

A-3, B-1, C-2

A-1, B-2, C-3

⇒ A constant

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*f*=

*f*

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more than 600 ohms

⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc

0

1 rad/sec

4 rad/sec

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⇒ Brownian motion is

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thermal motion of electrons in a resistance

random diffusion of holes and electrons in semi- conductors

both (b) and (c)

⇒ Pulse stuffing is used in

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asynchronous TDM

Any TDM

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⇒ The efficiency of a chopper circuit is about

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around 50%

around 20%

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⇒ The most commonly used semiconductor material is

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mixture of silicon and germanium

none of the above

⇒ Which of these commutation methods uses two leads?

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Class B

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⇒ A Colpitt's oscillator uses

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⇒ The depth of modulation is doubled in FM system then, the power transmitted

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⇒ If the mantissa of a digital computer is 37 bit long then the accuracy of the digital computer will be of

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⇒ Which of the following is non-sinusoidal oscillator?

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⇒ In Modulation, "carrier" is

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speech voltage to be transmitted

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⇒ To couple a coaxial line to a parallel wire line, it is best to use a

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slotted line

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directional coupler

⇒ For an RC impedance function Z

Z(∞) = Z(0)

Z(∞) < Z(0)

Z(∞) ≤ Z(0)

Z(∞) > Z(0)

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Match the following:

List I (Memories) | List II (Characteristic) | ||
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A. | Static PLA | 1. | erasable, programmable |

B. | CCD | 2. | ultra high speed |

C. | ECL | 3. | stores large volume of data |

D. | GAL | 4. | Does not need refreshing |

5. | Non-volatile |

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

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

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A-3, B-5, C-2, D-1

⇒ Consider the following statements:

- Acceptor level is formed very close to the conduction band.
- The effective mass of the free electron is same as that of a hole.
- The magnitude of the charge of a free electron is same as that of a hole.
- Addition of donor impurities adds holes to the semiconductor.

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2 and 4

3 and 4

⇒ The term critical frequency denotes

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the highest frequency that is reflected by the ionosphere at vertical distance

the lowest frequency by which communication is possible between two given points

none of the above

⇒ In 8085 microprocessor, what is the memory word addressing capability?

32 K

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Maxwell Wien bridge for measurement of inductance and Wien bridge for measurement of capacitance

⇒ Eddy current loss is

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⇒ In the circuit of figure both diodes are ideal. If

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Q, base

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saturation, cut off

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power amplifier

voltage amplifier

current amplifier

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Match the following:

List I (Instrument) | List II (Parameters) | ||
---|---|---|---|

A. | Moving coil galvanometer | 1. | High inertia, soft spring control |

B. | Ballistic galvanometer | 2. | No control, high damping |

C. | Vibration galvanometer | 3. | Soft spring control, critical damping |

D. | Moving coil flux meter | 4. | Low inertia, tuned spring control |

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

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

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

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