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Q1. | A single phase half bridge inverter required to feed R-L loads needs |

A. | 2 thyristors [Wrong Answer] |

B. | 4 thyristors [Wrong Answer] |

C. | 2 thyristors and two diodes [Correct Answer] |

D. | 4 thyristors and 4 diodes [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 :**

⇒ A dual trace CRO has

one electron gun

two electron guns

one electron gun with one two pole switch

two electron guns with one two pole switch

⇒ The curve representing Ohm's law is

linear

a parabola

a hyperbola

sine function

⇒ In p mode of operation of magnetron the spikes due to phase focussing effect rotate at an angular velocity corresponding to

one pole/cycle

two pole/cycle

four pole/cycle

six pole/cycle

⇒ As per Boolean algebra, inputs can be interchanged in

OR gates

AND gates

both OR and AND gates

none of the above

⇒ The time constant of the network shown in figur

2 RC

5/3 RC

RC/2

None of these

⇒ The OP-AMP circuit shown above represen

high pass filter

low pass filter

band pass filter

band reject filter

⇒ A blank EPROM has

all bits set to logical 0

all bits set to logical 1

half the total number of bits set to 0 and remaining half to logical 1

either (a) or (b)

⇒ An arbitrary signal

*m (t)*has zero average value and it is bandlimited to 3.2 kHz. It is sampled at the rate of 8 K samples/S. The samples are passed through an ideal bandpass filter with centre frequency of 32 kHz and bandwidth of 6.4 kHz. The output of band pass filter is

AM-DSB signal with suppressed carrier

AM-DSB signal with carrier

AM-SSB signal with carrier

a sequence of exponentially decaying sine waves

⇒ Which of these instrument does not have a control spring?

Moving iron ammeter

PMMC ammeter

Electrostatic voltmeters

Power factor meter

⇒ 7483 is a TTL binary adder. It can add

two 4-bit binary numbers

four 6-bit binary numbers

four 8-bit binary numbers

any number of 4-bit numbers

⇒ The capacitance of a parallel plate capacitor varies as per the equation C(

*t*) = C

_{0}(1 - cos ω

*t*). It is connected to a battery of V volts. The equation for current is

ωC

_{0}V (1 - cos ω

*t*)

ωC

_{0}V(1 - sin ω

*t*)

ωC

_{0}V (1 - sin 2ω

*t*)

ωC

_{0}V sin ω

*t*

⇒ A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls find cut off wavelength for dominant mode.

4 cm

1 cm

2 cm

8 cm

⇒ When the light falling on a photodiode increases, the reverse minority current

increases

increases or decreases

decreases

remains the same

⇒ The shunt admittance of a transmission line is given by

γ = R +

*j*ωL

γ = R -

*j*ωL

γ = G +

*j*ωC

γ =

*j*ωGC

⇒ The gate width of a monostable multivibrator is given by

T = 1.1 RC

T = 0.693 RC

0.963 RC

T = 0.369 RC

⇒ A single phase full converter gives maximum and minimum output voltage at firing angles of

0 and 180° respectively

180° and 0° respectively

0 and 90° respectively

90° and 0° respectively

⇒ A + AB =

A

A

A + B

A + B

⇒ Which of the following plot can be used to show the input volt-ampere characteristics of a common-emitter configuration?

V

_{BE}versus

*i*

_{B}for constant values of V

_{CE}

V

_{CE}versus

*i*

_{C}for constant values of I

_{B}

V

_{CE}versus

*i*

_{C}for constant values of I

_{E}

None of the above

⇒ Which one of the systems described by the following I/P - O/P relations is time invariant

*y*(

*n*) =

*n*

*x*(

*n*)

*y*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1)

*y*(

*n*) =

*x*(-

*n*)

*y*(

*n*) =

*x*(

*n*) cos 2p

*f*

_{0}

*n*

⇒ In PCM, the quantization noise depends on

sampling rate

signal power

number of quantization level

signal energy

⇒ In single tone FM discriminator (S

_{0}/N

_{0}) is

proportional to deviation

proportional to cube of deviation

proportional to square of deviation

none of the above

⇒ 11101

_{2}x 10001

_{2}=

111101101

111101100

11110

1100110

⇒

**Assertion (A):** If an electron having charge *e* is revolving in an orbit of radius R and with angular velocity ω, the magnetic dipole moment of orbit is 0.5 *e*ωR^{2}.

**Reason (R):** Orbital angular momentum and magnetic dipole moment are always equal.

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

⇒ Find equivalent resistance. Each resistance is l &Om

5/12 Ω

5/6 Ω

6/5 Ω

6/10 Ω

⇒ In 8085

P flag is set when the result has even parity

P flag is set when the result has odd parity

P flag is reset when the result has odd parity

P flag is reset when the result has even parity

⇒ For a MOD-12 counter, the FF has a

*t*= 60 ns The NAND gate has a

_{pd}*t*of 25 n sec. The clock frequency is

_{pd}3.774 MHz

> 3.774 MHz

< 3.774 MHz

4.167 MHz

⇒ The time constant of an R.C. circuit increases if the value of resistance is

increased

decreased

either of the above

none of the above

⇒ In an amplifier with a gain of - 1000 and feedback factor β = - 0.1, the change in gain is 20% due to temperature. The change in gain for feedback amplifier will be

0.1

0.05

0.002

0.0001

⇒ Consider the following amplifier with negative feed

-9 x 10

^{-3}

9 x 10

^{-3}

-11 x 10

^{-3}

11 x 10

^{-3}

⇒ Let JCOKE = 3 and LPEPSI = 5. Consider the statement

1

15

10