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Q1. | A dielectric should have poor heat conductivity. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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

⇒ A capacitor is considered to be completely charged in __________ time constant.

one

three

five

eight

⇒ In waveguides the existing waves are

TE only

TM only

both (a) and (b)

all of the above

⇒ A bulb rated at 60 W, 120 V is used for 30 minutes. The charge associated with this operation is

3600 C

900 C

7200 C

600 C

⇒ A computer program is used to read N and print the sum 1

^{2}+ 2

^{2}+ 3

^{2}+.....+ N

^{2}. If N = 10, the print out will show the number

100

10

385

285

⇒ A counter has N flip flops. The total number of states are

N

2 N

2

^{N}

4 N

⇒ The changes in ambient temperature affect the open loop gain of amplifier.

TRUE

FALSE

⇒ VSWR can have any value between

0 and 1

- 1 to + 1

0 to ∞

1 to ∞

⇒ Frequency response approach is a simple approach to control system design.

TRUE

FALSE

⇒ Figure shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displa

100

121

144

172

⇒ The difference between sequential and combinational circuits is

Combinational circuits store bits

Combinational circuits have memory

Sequential circuits store bits

Sequential circuits have memory

⇒ Calculate the stability factor and change in I

_{c}from 25°C to 100°C for, β = 50, R

_{B}/R

_{E}= 250, ΔI

_{CO}= 19.9

*n*A for emitter bias configuration

42.553, 0.85 μF

40.91, 0.58 μF

38.53, 0.85 μF

41.10, 0.39 μF

⇒ In a two terminals network the O.C. voltage measured at the given terminals is 100 V and s.c., currents at the same terminals 5 A. If a load of 80 Ω resistance is connected at the terminals, load current is

0.0416666666666667

1.25 A

0.25

6.25 A

⇒ A parallel plate capacitor having C = 200 x 10

^{-12}F has loss dielectric having tan δ = 4 x 10

^{-4}. At an ac voltage of

*f*= 10

^{6}Hz and peak value 2 V, the dielectric losses are

10

^{-8}W

10

^{-6}W

10

^{-4}W

10

^{-2}W

⇒ A FM signal with modulation index M

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_{f}M

_{f}

M

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_{f}2M

_{f}

UM

_{f}

⇒ As compared to TTL, CMOS logic has

higher speed of operation

higher power dissipation

smaller physical size

all of the above

⇒ An antenna has a gain of 44 dB. Assuming that the main beam of the antenna is circular in cross-section the beamwidth will be

0.4456°

1.4456°

2.4456°

3.4456°

⇒

Match the following:

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

A. | PMMC | 1. | Square law type scale |

B. | Moving iron | 2. | Very good response |

C. | Thermo-couple | 3. | Linear scale |

D. | Electrostatic | 4. | Voltmeter |

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

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

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

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

⇒ Companding is used

to overcome quantising noise in PCM

in PWM receivers to reduce impulse noise

to protect small signals in PCM from quantising noise

none of the above

⇒ In a half bridge inverter, the freewheeling diodes are needed

even when load is resistive

only when load is inductive

only when load is inductive or capacitive

for all types of loads

⇒ Binary number 1101 is equal to octal number

17

16

15

14

⇒ The induced magnetic dipole moment has a direction opposite to the applied magnetic field.

TRUE

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⇒ In its lowest state, the electron is bound to the field of proton by an energy equal to

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13.6 eV

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⇒ Which of the following is a valid integer variable in FORTRAN 77?

ALPHA

NEXT

BANGLORE

ABC

⇒ A digital clock uses __________ chip

SSI

LSI

VLSI

MSI

⇒ A resistance R, inductance L and capacitance C are in series. The source frequency is adjusted to be equal to resonant frequency. The lower half power frequency is ω

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ω

_{1}

less than ω

_{1}

more than ω

_{1}

either more than ω

_{1}or less then ω

_{1}

⇒ The resonance frequency of the circui

5.4 K

*n*

_{2}

4.5 K

*n*

_{2}

5 K

*n*

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∞

⇒

**Assertion (A):** Thevenin's theorem helps us to find current in a branch of a network for different values of impedances of that branch.

**Reason (R):** Thevenin's equivalent circuit replaces a network by a voltage source in series with impedance.

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

⇒ Good smoothing factor of a coil depends on

inductance of the coil

terminal voltage

cross-sectional area of the wire of the coil

property of the wire of the coil

⇒ Which of the following stage is not present in AM receiver as compared to FM receiver?

AM amplifier

Demodulator

Amplitude limiter

AF amplitude

⇒ A function Z(

*s*) has zero at infinity if

the degree of numerator and denominator are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one