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. | Which of the following is used in temperature alarm circuits? |

A. | Thermistor [Correct Answer] |

B. | Photoconductor [Wrong Answer] |

C. | Transistor [Wrong Answer] |

D. | Varistor [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 :**

⇒ The scaling factor of an MOS device using constant voltage scaling model, the gate area of the device will be scaled as

1/a

1/a

^{2}

1/a

^{3}

1/a

^{4}

⇒ The function

*f*(

*t*) = E[u(

*t*-

*a*) -

*u*(

*t*-

*b*)] is

a pulse function originating at

*t*=

*a*

a step function orginating at

*t*= 0

an exponential function originating at

*t*=

*a*

a pulse function originating at

*t*=

*a*and duration (

*b*-

*a*)

⇒ A source of angular frequency 1 rad sec has a source impedance consisting of 1 Ω resistance in series with 1 H inductance. The load that will obtained the maximum power transfer is

1 Ω resistance

1 Ω resistance in parallel with 1 H inductance

1 Ω resistance in series with 1 F capacitor

1 Ω resistance in parallel with 1 F capacitor

⇒ The passband of the tuned circuits of a radio receiver should be equal to

20 kHz

455 kHz

1455 kHz

more than 455 kHz

⇒ ISDN stands for

Integrated Services Digital Network

Inter Services Digital Network

Inter Subscriber Digital Network

integrated Subscriber Digital Network

⇒ The number of bits of information required to indicate the correct selection of 3 independent consecutive events out of 75 equally probable events is

6.23

18.69

10.46

24.92

⇒ The purpose of series quadrature windings in amplidyne is to

neutralize the effect of armature reaction

reduce commutation difficulties

increase the gain

increase response time

⇒ For an

*m*-derived filter, attenuation is infinite when

*f*=

*f*

_{∞}.

TRUE

FALSE

⇒ A capacitance transducer has two plates each of area 5 mm

^{2}. The coil gap is 2 mm. Displacement sensitivity due to change in gap length is

11.1 pF/cm

44.2 pF/cm

52.3 pF/cm

66.3 pF/cm

⇒ Binary 1000 will be the result of which of the following?

Binary 1000 - 100

Binary 1011 - 1111

Binary 1111 - 111

Binary 11111 - 1111

⇒ Value of 'K' for the system for which the system is stab

*K*< 1

*K*> 1

*K*< 2

*K*> 2

⇒ The forbidden band in semiconductors is of the order of

6 eV

1 eV

10 eV

0.01 eV

⇒ A high level language is less efficient than machine language.

TRUE

FALSE

⇒ The mean life time of the minority carriers is in the range of a few

seconds

milli seconds

micro seconds

nano seconds

⇒ Which one of the following circuits is most suitable as an oscillator at a frequency of 100Hz?

Hartley oscillator

Colpitts oscillator

Crystal oscillator

Twin-T oscillator

⇒ In a 3 phase bridge inverter with 180° mode of operation the numbers of thyristors conducting at one time are

1

2

3

4

⇒ A 2 bit binary multiplier can be implemented using

2 inputs ANDs only

2 inputs XORs and 4 input AND gates only

Two 2 inputs NORs and one XNOR gate

XOR gates and shift registers

⇒ A cycloconverter can be

step down

step up

step down or step up

none of the above

⇒ In ferromagnetic materials, the orientation between neighbouring permanent dipoles is parallel.

TRUE

FALSE

⇒ An AC source or RMS voltage 20V with internal impedance Z

_{s}= (1 + 2

*j*) Ω feeds a load of impedance Z

_{L}= (7 + 4

*j*) Ω in the figure below. The reactive power consumed by the loa

8 VAR

16 VAR

28 VAR

32 VAR

⇒ The output impedance of an ideal op-amp is

zero

low

high

infinite

⇒ A fascimile reproduction has a specification of 200 lines per frame, progressive scanning and 5 frames per second. The time to scan one line is

5 ms

2.5 ms

1 ms

0.1 ms

⇒ The integral of a unit step function is

an impulse function

a ramp function

a ramp function of slope 1

none of these

⇒ The internal structure of PL A is similar to

RAM

ROM

both RAM and ROM

neither RAM nor ROM

⇒

Match the following:

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

A. | On-off | 1. | steam kettle with different settings |

B. | Proportional | 2. | Elevator |

C. | Cascade | 3. | Robot-positioning |

D. | Digital | 4. | Domestic Refrigerator |

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

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

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

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

⇒ Assume that

*x*= 7, the Java operation

*x*=

*x*- means that final value of

*x*is

7

-1

6

-6

⇒ The characteristic polynomial of a system is

*q*(

*s*) = 2

*s*

^{5}+

*s*

^{4}+ 4

*s*

^{3}+ 2

*s*

^{2}+ 1. The system is :

stable

marginally stable

unstable

oscillatory

⇒ A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf is

1.39 V

0.75 V

13.9 V

7.45 V

⇒ The characteristic equation of an SR flip-flop in given by

Q

_{n+1}= S + RQ

_{n}Q

_{n+1}= RQ

_{n}+ SQ

_{n}Q

_{n+1}= S + RQ

_{n}

Q

_{n+1}= S + RQ

_{n}⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.

TRUE

FALSE