Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | A single phase bridge type cycloconverter uses eight thyristors. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ Power gain of an antenna in a given direction is the ratio of

average power to maximum power

radiation intensity in that direction to the total input radiated power

radiation intensity in that direction to the average radiated power

none of the above

⇒

Match the following:

List I (Operator) | List II (Description) | ||
---|---|---|---|

A. | ! = | 1. | Left shift |

B. | = = | 2. | Right Shift |

C. | < < | 3. | Equal to |

D. | > > | 4. | Not equal to |

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

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

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

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

⇒ Consider the following statements about diamagnetic material and diamagnetism.

- The materials have negative magnetic susceptibility.
- At very low temperature diamagnetic materials.

1 only

2 only

Both 1 and 2

neither 1 nor 2

⇒ The circuit show in the figure has 4 boxes each described by inputs P, Q, R and outputs

*y, z*

4 bit adder giving P + Q

4 bit subtractor P - Q

4 bit subtractor Q - P

4 bit adder P + Q + R

⇒ If PRIN = 200.0 and BINT = 0.0525 the result of expression

`INCOME = PRIN * (1 + BINT)`

will be210

210.5

210.5

210.5

⇒ In a half wave voltage doubler circuit the input frequency is 50 Hz. The ripple frequency is

25 Hz

50 Hz

100 Hz

150 Hz

⇒ In a CB amplifier the maximum efficiency could be

0.99

0.85

0.5

0.25

⇒ In a CE amplifier

both ac and dc load lines have the same slope

the ac load line has more slope than dc load line

the ac load line has less slope than dc load line

the two load lines may have slope more than the other

⇒ The number of protons in a copper atom are

2

9

11

29

⇒ Which chopper circuit uses saturable reactor?

Auxiliary commutated

Jones chopper

Morgan chopper

Load commutated

⇒ Two identical NMOS transistors M

_{1}and M

_{2}are connected as shown below. V

_{bias}is chosen so that both transistors are in saturation. The equivalent

*g*of the pair is defined t

_{m}the sum of individual

*g*'s of the transistors

_{m}the product of individual

*g*'s of the transistors

_{m}nearly equal to the

*g*of M

_{m}_{1}

nearly equal to

*g*/

_{m}*g*

_{0}of M

_{2}

⇒ For a short dipole having an effective length less than half the wavelength the radiation resistance is

proportional to length

proportional to square root of length

proportional to square of length

none of the above

⇒ A three-section RC phase shift oscillator has R = 10K ohms and C = 0.001 μF. If the oscillator is to be made variable using the same value of R, what should be the value of capacitor to obtain a frequency if 1 kHz?

636 pF

180 pF

65 pF

30 pF

⇒ The pole-zero plot given below corresponds

low pass filter

high pass filter

band pass filter

notch filter

⇒ In the circuit of figure, PIV can be u

E

_{m}

2 E

_{m}

0.5 E

_{m}

2 E

_{m}

⇒ A half wave diode rectifier and full wave diode bridge rectifier both have an input frequency of 50 Hz. The frequencies of outputs respectively are

100 Hz and 50 Hz

50 Hz and 100 Hz

100 Hz each

50 Hz each

⇒ Maximum power from a source having internal resistance R

_{i}is delivered to a resistive load R

_{L}, if

R

_{i}> R

_{L}

R

_{i}< R

_{L}

R

_{i}= R

_{L}

^{2}

R

_{i}= R

_{L}

⇒ The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 μ sec/cm. The lowest frequency which can be fully displayed on the screen is

more than 100 kHz

equal to 100 kHz

equal to 10 kHz

less than 10 kHz

⇒

**Assertion (A):** The reverse current in a *p*-*n* junction is nearly constant.

**Reason (R):** The reverse breakdown voltage of a *p-n* diode depends on the extent of doping.

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

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

A is true but R is false

A is false but R is true

⇒ The Voltage

*e*

_{0}in the figu

2 V

4 V

4/3 V

8 V

⇒ In a 100% amplitude modulated signal, the power in the upper sideband when carrier power is to be 100 W and modulation system SSBSC, is

100 W

66 W

50 W

25 W

⇒ Integral control action

removes offset

may lead to oscillatory response

both (a) and (b)

neither (a) nor (b)

⇒ In a 3 input NAND gate, the number of states in which output is 1 equals

8

1

6

5

⇒ High frequency inductors and capacitors are commonly plated with silver. The main purpose of this is to

reduce dc resistance

reduce ac resistance

increase dc resistance

increase ac resistance

⇒ To realize following function

*'f'3*

6

4

10

6

4

10

⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then

average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A

both the average and rms thyristor currents will be less than 20 A

both the average and rms thyristor currents will be more than 20 A

rms thyristor current will be 20 A and average thyristor current will be 10 A

⇒ The scale of PMMC instrument is linear.

TRUE

FALSE

⇒ In a 4 bit ripple counter using flip flops with

1.25 MHz

3.25 MHz

6.25 MHz

12.5 MHz

⇒ The cut in voltage of a diode is nearly equal to

applied forward voltage

applied reverse voltage

barrier potential

none of the above

⇒ In the op-amp circuit of figure, V

⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then

average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A

both the average and rms thyristor currents will be less than 20 A

both the average and rms thyristor currents will be more than 20 A

rms thyristor current will be 20 A and average thyristor current will be 10 A

⇒ The scale of PMMC instrument is linear.

TRUE

FALSE

⇒ In a 4 bit ripple counter using flip flops with

*t*= 40 ns, the maximum frequency can be_{pd}1.25 MHz

3.25 MHz

6.25 MHz

12.5 MHz

⇒ The cut in voltage of a diode is nearly equal to

applied forward voltage

applied reverse voltage

barrier potential

none of the above

⇒ In the op-amp circuit of figure, V

_{010 V-10 V5 V-5 V}