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Q1. | Ohm's law is valid for |

A. | dc voltage and current [Wrong Answer] |

B. | ac voltage and current [Wrong Answer] |

C. | all voltages and current [Correct Answer] |

D. | dc and ac voltages and currents [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 :**

⇒ A vibration galvanometer is a

moving coil instrument

moving iron instrument

dynamometer instrument

induction instrument

⇒ Consider the following stateme

1 and 2 only

1, 2 and 4

2 and 3 only

2, 3 and 4

⇒ The following graph, the number of trees (P) and the number of cut-sets (Q)

P = 2, Q = 2

P = 2, Q = 6

P = 4, Q = 6

P = 4, Q = 10

⇒ The constant magnitude of G(

*s*) plane are

a family of straight horizontal lines

a family of straight inclined lines with positive slope

a family of straight inclined lines with negative slope

a family of circles

⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be

1024

512

256

64

⇒ The arrangement in the given figure is a hybid

*T*. If 100 mW fed at port 1, the power reflected back at port

0

25 mW

50 mW

100 mW

⇒ Cells are connected in series to increase

current-rating

both voltage and current rating

the life of cell

voltage rating

⇒ In a metal, the drift velocity of electrons in the presence of a electric field E is

proportional to E

proportional to E

inversely proportional to E

proportional to E

^{2}

⇒

**Assertion (A):** A sine wave with slew rate distortion looks rectangular

**Reason (R):** The maximum rate of output voltage change is called slew rate

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ From which instant is the turn off time of a thyristor defined

when anode voltage becomes zero

when anode current becomes zero

when both anode voltage and current become zero

none of the above

⇒ As per temperature limits, the number of categories of solid dielectrics are

7

6

8

5

⇒ Using 4-bit numbers (

*n*= 4) if

*k*= (0011)

_{2}how is

*k*expressed in 2's complement.

(1011)

_{2}

(1101)

_{2}

(1100)

_{2}

(0101)

_{2}

⇒ Which of the following conversion is incorrect?

111110111

_{2}= 767

_{8}

11011010

_{3}= 665

_{8}

1011.1111

_{2}= 13.74

_{8}

10101.11

_{2}= 26.5

_{8}

⇒ An

*n*type silicon bar 0.1 cm long and 100 μm

^{2}in cross-sectional area has a majority carrier concentration of 5 x 10

^{20}/m

^{3}and the carrier mobility is 0.13 m

^{0}/V-

*s*at 300k. If the charge of an electron is 1.6 x 10

^{-19}coulomb, then the resistance of the bar is

10

^{6}ohm

10

^{4}ohm

10

^{-1}ohm

10

^{-4}ohm

⇒ A static excitation system uses

transformer and thyristors

transformer and ac exciter

dc exciter and ac exciter

transformer and dc exciter

⇒ Which of following antenna does not depend upon the frequency?

Log-periodic

Parabolic

Conical

All of the above

⇒ In a 4 bit full adder how many half adders and OR gates are required

8 and 4

7 and 4

7 and 3

8 and 3

⇒ The pole of a reactive function

lie on

*j*ω axis only

lie on negative real axis only

may lie anywhere on

*s*plane

lie on

*j*ω axis or on negative real axis

⇒ Which one of the following effects is used in measuring power?

Seeback

Ferrari

Induction

Hall

⇒ The number of primitive string operations in 8086 is

3

4

5

6

⇒ Armstrong modulator generates

AM signals

FM signals

PM signals

both (b) and (c)

⇒

Match the following:

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

A. | Anderson Bridge | 1. | Low resistance |

B. | Kelvin Bridge | 2. | Medium resistance |

C. | Schering Bridge | 3. | Inductance |

D. | Wheatstone Bridge | 4. | Capacitance |

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

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

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

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

⇒ In Modulation, "carrier" is

resultant wave

speech voltage to be transmitted

voltage with constant frequency, phase or amplitude

voltage for which frequency, phase or amplitude is varied

⇒ Consider the following statements:

- Race around condition can occur in JK flip flop when both inputs are 1
- A flip flop is used to store one bit of information
- A transparent latch is a D type flip flop
- Master slave flip flop is used to store two bits of information

1, 2, 3

1, 3, 4

1, 2, 4

2, 3, 4

⇒ TTL logic is preferred to DRL logic because

greater fan-out is possible

greater logic levels are possible

greater fan-in is possible

less power consumption is achieve

⇒

Match the following:

List I (Modes) | List II (Characteristic) | ||
---|---|---|---|

A. | Evanescent | 1. | Rectangular waveguide does not support |

B. | Dominant mode | 2. | No wave propagation |

C. | TM_{10} and TM_{01} | 3. | Lowest cut-off frequency |

A-1, B-2, C-3

A-2, B-3, C-1

A-1, B-3, C-2

A-2, B-1, C-3

⇒ Radiation resistance for wire antenna is

55 Ω

65 Ω

100 Ω

377 Ω

⇒ The first contribution to logic was made by

George Boole

Copernicus

Aristotle

Shannon

⇒ In a line with finite attenuation

power transmission is least efficient when there are no standing waves on the line

power transmission is most efficient when there are no standing waves on line

Load power depends on phase constant

standing waves will always exist on the line

⇒ In the Taylor series expansion of exp(

*x*) + sin(

*x*) about the point

*x*= p, the coefficient of (

*x*- p)

^{2}is

exp (p)

0.5 exp (p)

exp (p) + 1

exp (p) - 1