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Q1. | A sinusoidal voltage has peak to peak value of 100 V. The rms value is |

A. | 50 V [Wrong Answer] |

B. | 70.7 V [Wrong Answer] |

C. | 35.35 V [Correct Answer] |

D. | 141.41 V [Wrong Answer] |

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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 :**

⇒ Which statement is true for an ac circuit?

Active power is always less than apparent power

Active power cannot be more than apparent power

Active power is always more than reactive power

Active power cannot be more than reactive power

⇒ For class B operation the theoretical maximum efficiency is

1

0.785

0.5

0.275

⇒ For the polynomial

*P*(

*s*) =

*s*

^{5}+

*s*

^{4}+ 2

*s*

^{3}+ 2

*s*

^{2}+ 3

*s*+ 15 The number of roots which lie in the right half of the

*s*plane is :

4

2

3

1

⇒

Match the following:

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

A. | Total instantaneous value of emitter current | 1. | I_{E} |

B. | Quiescent value of emitter current | 2. | i_{E} |

C. | Instantaneous value of as component of emitter current | 3. | I_{e} |

D. | RMS value of ac component of emitter current | 4. | i_{e} |

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

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

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

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

⇒ As temperature increases

the forbidden energy gap in silicon and germanium increase

the forbidden energy gap in silicon and germanium decrease

the forbidden energy gap in silicon decreases while that in germanium decreases

the forbidden energy gap in silicon increases while that in germanium decreases

⇒ Find R

_{L}for maximum power trans

3 Ω

1.125 Ω

4.1785 Ω

None of these

⇒ When an SCR is in forward blocking mode, the applied voltage

appears across only one junction

is equally shared by two junctions

is equally shared by three junctions

may appear across one or more junctions

⇒ A cable has an insulation resistance of 10

^{10}ohms. If the length is doubled, the insulation resistance will be

2 x 10

^{10}Ω

0.5 x 10

^{10}Ω

10

^{10}Ω

4 x 10

^{10}Ω

⇒

**Assertion (A):** The number of basic loops is equal to number of links.

**Reason (R):** The graph theory helps in choosing independent variables in circuit analysis.

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

⇒ A chopper is a high efficiency circuit.

TRUE

FALSE

⇒ When a power diode is conducting, the voltage drop across it is about

I V

5 V

20 V

50 V

⇒ The dc output voltage from a power supply

increases with higher values of filter capacitance and decreases with more load current

decreases with higher values of filter capacitance and increases with more load current

decreases with higher values of filter capacitance as well as with more load current

increases with higher values of filter capacitance as well as with more load current

⇒ The voltage at which Avalanche occurs is known as

cut in voltage

barrier voltage

breakdown voltage

depletion voltage

⇒ The most commonly used devices for differencing and amplification, in control systems, are

BJT amplifiers

FET amplifiers

operational amplifiers

either (a) or (b)

⇒ The stud in a stud mounted SCR acts as

anode

cathode

gate

anode or cathode

⇒ A VF display operates on the principle of a vacuum diode.

TRUE

FALSE

⇒ The system of the given fi

has two poles and one zero in left half plane

has two poles and one zero in right half plane

has two poles in left half plane and zero in right half plane

none of the above

⇒ Which of the following is not a valid real constant in C?

1.2

*e*2.0

-2.3

*e*- 2

-2.3

*E*2

-2.3

*e*2

⇒ Power is drawn from a source at power factor 0.7. P

_{av}= 300 watt. The reactive power is

0

105

100 VA

107 VA

⇒ In a one pole active low pass filter, the cut off frequency is

*f*

_{c}. Then

gain decreases at the rate of 20 dB per decade increase in frequency above

*f*

_{c}

gain decreases at the rate of 20 dB per decade decrease in frequency below

*f*

_{c}

gain decreases at the rate of 40 dB per decade increase in frequency above

*f*

_{c}

gain decreases at the rate 40 dB per decade decrease in frequency below

*f*

_{c}

⇒ The amount of photoelectric emission current depends on the frequency of incident light.

TRUE

FALSE

⇒ The materials not having negative temperature coefficient of resistivity are

metals

semiconductors

insulators

none of the above

⇒ The relation between thermal conductivity K (W/m/°C), heat flow density Q (watt/m

^{2}) and

*d*T/

*dx*(°C per metre) is

Q = K(

*d*T/

*dx*)

Q = - K(

*d*T/

*dx*)

K = Q(

*d*T/

*dx*)

*d*T/

*dx*= - QK

⇒ The energy of highest value of Autocorrelation of a function 100 cos 50 p

*t*is

50

10

200

zero

⇒ Debye temperature of metals is

about 10 K

about 200 K

about 600 K

about 2 K

⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc

0

1 rad/sec

4 rad/sec

16 rad/sec

⇒ Which of the following pulse modulation is analog?

PCM

Differential PCM

PWM

Delta

⇒ Effect of loading of line is

increase in Z

_{0}, a and β

increase in Z

_{0}and β but decrease in a

decrease in Z

_{0}, a and β

decrease in Z

_{0}and β but increase in a

⇒ A meter has a square law scale. For 2 A current the deflection in 90°. For a deflection of 45°, the current is

0.0416666666666667

1.5 A

1.414 A

1.61 A

⇒ Magnesium is alloyed with conducting materials for antenna primarily with the purpose of

increasing efficiency

improving radiative power

reducing weight

increasing density