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Q1. | The integral of unit step function is a ramp of slope unity. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher

insulation resistance

resistivity

conductivity

current density

⇒

**Assertion (A):** Points in the *s* plane at which function G(*s*) is not analytic are called singular, points.

**Reason (R):** Singular points at which the function G(*s*) or its derivative approach infinity are called poles.

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

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

A is correct but R is wrong

R is correct but A is wrong

⇒ In the basic series inverter circuit, the source supplies load

only in positive half cycle

both in positive and negative half cycles

only in part of positive half cycle

in positive half cycle and part of negative half cycle

⇒ The scale of dynamometer wattmeter is non linear.

TRUE

FALSE

⇒ A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about

29 kV

2.9 kV

45 kV

4.5 kV

⇒

**Assertion (A):** In high Q circuits poles of Y(*s*) lie close to ω axis in complex frequency plane.

**Reason (R):** Q is inversely proportional to damping factor.

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

⇒ The current through a resistance

*R*is shown in figure. The computed value of power

400 ± 0.42 W

400 ± 4.6 W

400 ± 8.85 W

400 ± 10.65 W

⇒ Which of the following form of angle modulation in this? If

*e*= 10 sin(10

^{8}

*t*+ 3 sin 10

^{4}

*t*)

AM

FM

AM or FM

AM or PCM

⇒ The ending part of the popular teleserial Mahabharat will be beamed to the viewers

WESTAT

INSAT-IC

ARABSAT

INSAT-ID

⇒ The number of valence electrons in donor impurity are

5

4

3

1

⇒ The signal

*y*(

*t*) =

*x*(-

*t*) is __________ .

causal

non-causal

depends on

*x*(

*t*)

none of these

⇒ A uniform wave have components

in the perpendicular direction E existing while H is zero

in the direction of propagation E existing while H is zero

E and H are zero in direction perpendicular to direction of propagation

E and H existing only in direction perpendicular to direction of propagation

⇒ A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 100. If each of R, L and C is doubled from its original value, the new Q of the circuit is

25

50

100

200

⇒ A Hall effect transducer has K

_{H}= - 1 x 10

^{-8}. If B = 1 Wb/m

^{2}, I = 3 A and bismuth slab is 2 mm wide, the Hall voltage is

-7.5 x 10

^{-6}V

-15 x 10

^{-6}

-20 x 10

^{-4}V

-22.5 x 10

^{-4}V

⇒ If the valence electron is separated from a copper atom, the remaining part of atom has a net charge of

1

-1

0

3

⇒ The conductivity of an intrinsic semiconductor is

generally less than that of a doped semiconductor

given by σ

_{1}=

*en*

_{i}(μ

_{n}- μ

_{p})

given by σ

_{1}=

*en*

_{i}(μ

_{p}+ μ

_{n})

given by σ

_{1}=

*n*

_{i}(μ

_{n}+ μ

_{p})

⇒ In the circuit of figure the current through C at

*t*= &infin

0.166666666666667

2.5 A

3.1 A

0

⇒ Which of the following theorems is a manifestation of law of conservation of energy?

Tellegen's theorem

Reciprocity theorem

Thevenin's theorem

Norton's theorem

⇒ Microwave link repeaters are typically 50 km apart in TV transmission due to

atmosphere attenuation

output power tube limitations

attenuation of surface wave

earth's curvature

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

*v*

_{1}= 10 V and

*v*

_{2}= 10 V which diode will cond

D

_{1}only

D

_{2}only

Both D

_{1}and D

_{2}

Neither D

_{1}nor D

_{2}

⇒ A dipole antenna of λ/8 length has an equivalent total loss resistance of 1.5 Ω. The efficiency of the antenna is

0.0089159

0.089159

0.89159

8.9159

⇒ Choose the correct statement/statements :

In case of an antenna, the antenna resistance and loss resistance are not two different quantities.

The loss resistance includes loss by eddy currents, improper earth connections, insulation leakages, etc., but not

*I*

^{2}

*R*losses.

Radiation resistance varies directly as square-root of frequency

None

⇒ For a class B amplifier using a supply of V

_{CC}= 30 V and driving a load of 16 Ω the maximum efficiency will be __________ .

0.724

0.7854

0.624

0.6854

⇒ The intrinsic resistivity of silicon at 300 K is about

1 Ω-cm

400 Ω-cm

10000 Ω-cm

230000 Ω-cm

⇒ VTM stands for voltage tunable magnetron.

TRUE

FALSE

⇒ For attenuation of low frequencies we should use

shunt capacitance

series capacitance

shunt inductance

series inductance

⇒ Two sinusoidal waves 1 and 2 have peak values V

_{m1}and V

_{m2}. Wave 1 is leading wave 2 by ∠θ. Which of the following is correct?

*v*

_{1}= V

_{m1}sin θ and

*v*

_{2}= V

_{m2}cos θ

*v*

_{1}= V

_{m1}sin ω

*t*and

*v*

_{2}= V

_{m2}sin (ω

*t*- θ)

*v*

_{1}= V

_{m1}sin (ω

*t*+ θ/2) and

*v*

_{2}= V

_{m2}sin ω

*t*

none of the above

⇒ Video signals are transmitted through

amplitude modulation

frequency modulation

either amplitude or frequency modulation

neither amplitude nor frequency modulation

⇒ Consider the following Statements regarding resistance strain gauge

- The gauge factor is in the range of 2 to 5.
- The resistance changes due to change in specific resistance with strain.
- The resistance increases with increase in temperature.

1, 2, 3

1 and 2

2 and 3

1 and 3

⇒ The carriers of

*n*channel JFET are

free electrons and holes

holes

free electrons or holes

free electrons