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Q1. | If a function has only cosine terms, it must satisfy the equation |

A. | f(t) = -f(t) [Wrong Answer] |

B. | f(-t) = f(t) [Correct Answer] |

C. | f(-t) = -f(t) [Wrong Answer] |

D. | none of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ When there is rapid attenuation of field inside the conductor, the field current are concentrated close to the surface of the conductor; this phenomenon is called

skin effect

EM concentration effect

Faraday's effect

Ohm's effect

⇒ In figure, capacitor is used to develop pulses of short duration and large duty cycle across R

_{2}when switch is closed. Which of the following combinations is best sui

R

_{1}and R

_{2}large but C small

R

_{1}and R

_{2}small but C large

R

_{1}and C large and R

_{2}small

R

_{2}and C large but R

_{1}small

⇒ Three phase four wire induction energy meter is used to measure

energy in 3 phase balanced star load

energy in 3 phase balanced delta load

energy in 3 phase unbalanced load

either (a) or (b)

⇒ In CC configuration, the output signals has approximately

the same amplitude and phase

opposite amplitude and phase

same amplitude but opposite phase

none of the above

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

534

1403

1623

1513

⇒ What is the period of the sinusoidal signal

*x*(

*n*) = 5 cos [0.2 pn]?

10

5

1

0

⇒ The normalised form of 0.0152 x 10

^{18}is

0.152 x 10

^{17}

1.52 x 10

^{16}

15.2 x 10

^{15}

152 x 10

^{14}

⇒ In MF range, increasing the transmitter power

increases the range of transmitter

does not increase the range of transmitter because propagation is limited by tilt

decreases the range of transmitter because propagation is limited by tilt

increases the range of transmitter because propagation is through space waves

⇒

**Assertion (A):** The regular or irregular stacking of atoms has importanteffect on properties of materials.

**Reason (R):** The arrangement of atoms in a given material can be studied using X-rays.

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

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

A is true but R is false

A is false but R is true

⇒ The addition of impurity in extrinsic semiconductor is about 1 part in 10

^{8}parts.

TRUE

FALSE

⇒ If

*f*(

*t*) = -

*f*(-

*t*) and

*f*(

*t*) satisfies Dirichlet conditions, then

*f*(

*t*) can be expanded in Fourier series having

sine terms only

cosine terms only

cosine and constant terms

sine and constant term

⇒ Which of the following arithmetic operations requires only one operand in FORTRAN 77?

Addition

Multiplication

Negative

Substraction

⇒ Which of the following produces upper and lower side frequencies?

Microphone

Demodulator in a superheterodyne receiver

Modulator in a. radio transmitter

Oscillator in a receiver

⇒ The following circuit is implementation of:

- sum of full adder
- carry of half adder
- difference of full subtractor 1 only
- Nickel
- Silver
- Oxygen
- Aluminium

3 only

2 only

1 and 2 both

⇒ When a source is delivering maximum power to a load through a network, the ratio of power delivered to the source power

may be 50% or less than 50%

is 50%

may be 50% or more than 50%

may be 50% or more less than 50%

⇒ In which of these does thermionic emission occur?

LED

LCD

VF display

None

⇒ Atomic number of germanium is

24

28

32

36

⇒ 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

⇒ A single mode fibre not suffer from which type of dispersion?

Waveguide dispersion

Material dispersion

Intermodal dispersion

Polarization mode dispersion

⇒ For a series R-L-C circuit tuned at resonant frequency which of the following statements is correct?

The voltage across inductance is greater than applied voltage

The voltage across capacitance is greater than applied voltage

The voltage across both inductance and capacitance is greater than applied voltage

The voltage across both inductance and capacitance is less than applied voltage

⇒ A full bridge inverter is fed by a battery of 30 V. The rms value of output voltage is

15 V

152 V

30 V

302 V

⇒ In a series inverter

the commutating elements carry full load current

the commutating elements carry upto 50% of load current

the commutating elements do not carry load current

any of the above

⇒ The load impedance Z

_{L}of a CE amplifier has R and L in series. The phase difference between output and input will be

180°

0

more than 90° but less than 180°

more than 180° but less than 270°

⇒ For the compensator in the given figure the maximum phase lea

sin

^{-1}(1/3)

30°

45°

60°

⇒ The divergence of the electric field intensity at any point equals

1/4 pε

_{0}times the volume charge density

l/ε

_{0}times the volume charge density at that point

ε

_{0}times the volume charge density at that point

the volume charge density at that point

⇒ The circuit given bel

Circuit is band stop with two edge frequency of 39.7875 Hz to 1592 Hz

Circuit is band pass with two edge frequency of 39.7875 Hz to 1592 Hz

Circuit is oscillator, oscillation at two frequencies 39.7875 Hz to 1592 Hz depending on R

_{3}, R

_{4}, R

_{5}and R

_{6}

None of these

⇒ The number of protons in a copper atom are

2

9

11

29

⇒ In PCM, if the number of quantization levels is increased from 4 to 64, then the bandwidth requirement will approximately be increased __________ times.

8

16

3

32

⇒ Consider the following materials

1, 4, 3, 2

1, 4, 2, 3

4, 1, 3, 2

4, 1, 2, 3

⇒ For generating 1 MHz frequency signal, the most suitable circuit is

phase shift oscillator

weinbridge oscillator

colpitt's oscillator

clapp oscillator