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Q1. | In an unloaded transformer, the fluxes limiting the primary and secondary are 30 mWb and 20 mWb. The coefficient of coupling is |

A. | 1 [Wrong Answer] |

B. | 0.1 [Wrong Answer] |

C. | 0.33 [Wrong Answer] |

D. | 0.67 [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Typical size of digital IC is about

1″ x 1″

2″ x 2″

0.1″ x 0.1″

0.001″ x 0.001″

⇒ A bypass capacitor produces

dc ground

ac ground

both dc and ac ground

none of the above

⇒ When a JFET is cut off, it's like an __________ switch and when it is saturated, it's like a __________ switch.

closed, open

open, closed

open, open

closed, closed

⇒ An index register in digital computer is a register to be used for

performing arithmetic and logic operations

temporary storage of result

counting number of times a program is executed

address modification purpose

⇒ Which of the following circuits come under the class of sequential logic circuits?

- Full adder
- Full subtractor
- Half adder
- J-K flip-flop
- Counter

1 and 2

1, 2 and 3

3 and 4

4 and 5

⇒ In 8085 microprocessor, what is the length of IR (instruction register)?

6 bits

8 bits

12 bits

16 bits

⇒ A transistor in CE mode is in saturation region. Then the collector is almost at

ground potential

a potential equal to V

_{CC}

a potential equal to 0.5 V

_{CC}

a potential equal to 2 V

_{CC}

⇒

Match the following:

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

A. | LED | 1. | Heavy Doping |

B. | Avalanche Photodiode | 2. | Coherent Radiation |

C. | Tunnel diode | 3. | Spontaneous Emission |

D. | LASER | 4. | Current gain |

A-2, B-4, C-3

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

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

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

⇒ IF amplifiers for radio receivers are often tuned to

456 Hz

456 kHz

3456 MHz

456 GHz

⇒ If word length is 16 bits the decimal equivalent of largest number which can be stored is

32767

32766

16383

16384

⇒ In metals the valence electron wave functions are strongly perturbed by the presence of neighbouring atoms.

TRUE

FALSE

⇒ Four terminal approach is used in measuring low resistance because it

eliminates thermoelectric energy

eliminates stray capacitance

eliminates stray inductance

eliminates the effect of leads and contacts

⇒ The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The outpu

HIGH from 4 to 0

LOW from 0 to 4

HIGH from 0 to 1 and LOW from 1 to 4

LOW from 0 to 2 and HIGH from 2 to 4

⇒ From the given circuit below, we can conclude t

BJT is

*pnp*

BJT is

*npn*

transistor is faulty

not possible to determined

⇒ Waveform shown in figure is that

FM

PCM

AM-DSB

AM-SSB

⇒ Following state diagram shows clocked sequential circ

6

7

5

4

⇒ If 137 + 276 = 435 how much is 731 + 672?

534

1403

1623

1513

⇒ The time constant of the circuit in figur

RC

2 RC

3 RC

5 RC

⇒ Dynamic range of hi-fi system is at least

150 dB

120 dB

80 dB

40 dB

⇒ The external magnetic field in a magnetron is such that lines are

parallel to the axis of cathode

perpendicular to the axis of cathode

inclined to the axis of cathode

either (b) or (c)

⇒ For the minterm designation Y = ∑ m (1, 3, 5, 7) the complete expression is

Y = A BC + A B C

Y = A B C + A B C + ABC + A BC

Y = A B C + A B C + ABC + A BC

Y = A B C + ABC + A BC + A BC

⇒ The output of a linear system for any input can be computed in which of the following ways?

Only by summation of inpulse response by convolution integral

Only by summation of step response by superposition integral

Neither a nor b

Either (a) or (b)

⇒ A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. The frequencies present in the output will be

998 kHz and 1002 kHz

998 kHz, 999.2 kHz, 1000.8 kHz, 1002.0 kHz

998 kHz, 999.2 kHz, 999.7 kHz, 1000.3 kHz, 1000.8 kHz and 1000.2 kHz

none of the above

⇒ Consider the directive T : DS105. This directive

directs the assembler to reserve a sequence of 105 bytes in the memory

directs the assembler to reserve a sequence of 105 bits in the memory

directs the assembler to reserve a sequence of consecutive 105 bytes in the memory

directs the assembler to reserve a sequence of consecutive 105 bits in the memory

⇒

**Assertion (A):** Charge is dual of flux.

**Reason (R):** Short circuit is dual of open circuit.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ Which of the following theorems can be conveniently used to find power consumed in 10 Ω resistor in fig

Thevenin theorem

Maximum power transfer theorem

Millman's theorem

Superposition theorem

⇒ E7F6

_{16}= __________ .

600000

_{10}

59382

_{10}

9382

_{10}

382

_{10}

⇒ The function of blend control in stereo system is

to dilute left channel

to dilute right channel

to dilute any of the channels

none of the above

⇒ In figure, I

_{D}= 4 mA. Then V

_{D20 V10 V30 V1 V}

⇒ A voltage

*v*= 100 sin ω

*t*+ 10 sin 5 ω

*t*is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is

0.0314 cos 314

*t*+ 0.0157 cos 1570

*t*

0.0314 sin 314

*t*+ 0.0157 sin 1570

*t*

0.0314 cos 314

*t*+ 0.0314 cos 1570

*t*

0.0157 cos 314

*t*+ 0.0157 cos 1570

*t*