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Q1. | Nichrome is used for |

A. | overload line wires [Wrong Answer] |

B. | heater coils [Correct Answer] |

C. | lamp filaments [Wrong Answer] |

D. | all 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 :**

⇒ A dielectric does not have leakage current.

TRUE

FALSE

⇒ The theoretical power of white noise is

zero

finite

depend upon frequency of signal

infninite

⇒ To realize following function

*'f'3*

6

4

10

6

4

10

⇒ Find the radiation resistance of an antenna of length λ/10 meter?

8 Ω

780 Ω

7.8 Ω

78 Ω

⇒ It two voltages are

⇒ The total power radiated from an antenna system is determined by imagining that the antenna is at the centre of a very large

sphere

rectangle

square

ellipse

⇒ Considerable ionization occurs between the range

50 km to 400 km

100 to 400 km

50 km to 250 km

10 to 50 km

⇒ In a semi-conductor diode, the barrier offers opposition to

holes in P-region only

free electrons in N-region only

majority carriers in both regions

majority as well as minority carriers in both regions

⇒ Read the following statements about Java

All

1, 2 and 3 only

1, 2 and 4 only

2, 3, 4 only

⇒ The binary sum of 111010

1010101

1011001

1011101

1111111

⇒

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

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

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

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

⇒ In the basic series inverter circuit, the source supplies load

only in positive half cycle

both in positive and negative half cycles

only in part of positive half cycle

in positive half cycle and part of negative half cycle

⇒ In figure, I = 2A, then

5 V

3 V

2 V

1 V

⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are

16

15

14

13

⇒ A transmission line has a characteristic impedance of 50 Ω and a resistance of 0.1 Ω/m, if the line is distortion less, the attenuation constant (in Np/m) is

500

5

0.014

0.002

⇒ A single phase half wave controlled rectifier circuit has a free wheeling diode. The load is a combination of R and L. The firing angle is a. The period of conduction of SCR and free wheeling diode respectively are

a < ω

a < ω

a < ω

a < ω

⇒ In figure, the switch S is initially open and steady state conditions are reached. At

zero

0.0416666666666667

0.0833333333333333

0.125

⇒

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 R is false

A is false R is true

⇒ A static excitation system uses

transformer and thyristors

transformer and ac exciter

dc exciter and ac exciter

transformer and dc exciter

⇒ For real and odd signals, the Fourier series coefficient

purely imaginary

purely real and even

purely imaginary and odd

purely real and odd

⇒ The noise figure is

3 dB

6 dB

6.6 dB

12 dB

⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here

2

2

2

2

⇒ In solid dielectrics the rate of deterioration doubles for every 10-12°C rise in temperature.

TRUE

FALSE

⇒ The circuits with active pull up are preferred because of their stability for

wired - AND operation

wired - OR operation

bus operated system

reasonable dissipation and speed of operation

⇒ Consider the expression

None of the above

⇒

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

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

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

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

⇒ Given digits 2, 2, 3, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?

50

51

52

54

⇒ AM-SC stands for

Amplitude Modulated-Suppressed Carrier

Amplitude Modulated-Single Carrier

Amplitude Modulated-Synchronous Carrier

Amplitude Modulated-Self Carrier

⇒ In figure we need an ac ground. The proper value of

1000 μF

100 μF

10 μF

1 μF

⇒ A short circuited stub is preferred to an open circuited stub because an open circuited stub

is more difficult to fabricate and construct

is made of transmission line of different

is liable to radiate

is incapable of giving full range of reactance

⇒ Find the radiation resistance of an antenna of length λ/10 meter?

8 Ω

780 Ω

7.8 Ω

78 Ω

⇒ It two voltages are

*v*_{1}= 100 sin (ω*t*- 30°) and*v*_{2}= cos ω*t*then*v*_{1}is leading*v*_{2}by 30°*v*_{2}is leading*v*_{1}by 30°*v*_{2}is leading*v*_{1}by 60°*v*_{1}is leading*v*_{2}by 60°⇒ The total power radiated from an antenna system is determined by imagining that the antenna is at the centre of a very large

sphere

rectangle

square

ellipse

⇒ Considerable ionization occurs between the range

50 km to 400 km

100 to 400 km

50 km to 250 km

10 to 50 km

⇒ In a semi-conductor diode, the barrier offers opposition to

holes in P-region only

free electrons in N-region only

majority carriers in both regions

majority as well as minority carriers in both regions

⇒ Read the following statements about Java

- It is well suited to design software which works in conjunction with internet.
- It is cross platform language.
- Java is close to programming language C, C ++ etc.
- It is an object oriented.

All

1, 2 and 3 only

1, 2 and 4 only

2, 3, 4 only

⇒ The binary sum of 111010

_{2}and 11011_{2}is1010101

_{2}1011001

_{2}1011101

_{2}1111111

_{2}⇒

Match the following:

List I (DOS commands) | List II (Meaning) | ||
---|---|---|---|

A. | DBLSPACE | 1. | Deletes a director and its sub-directories |

B. | MEM | 2. | Displays the amount of used and free memory |

C. | SYS | 3. | Put a copy of DOS on disk |

D. | DELTREE | 4. | Compresses files to increase the storage capacity of disc |

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

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

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

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

⇒ In the basic series inverter circuit, the source supplies load

only in positive half cycle

both in positive and negative half cycles

only in part of positive half cycle

in positive half cycle and part of negative half cycle

⇒ In figure, I = 2A, then

5 V

3 V

2 V

1 V

⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are

16

15

14

13

⇒ A transmission line has a characteristic impedance of 50 Ω and a resistance of 0.1 Ω/m, if the line is distortion less, the attenuation constant (in Np/m) is

500

5

0.014

0.002

⇒ A single phase half wave controlled rectifier circuit has a free wheeling diode. The load is a combination of R and L. The firing angle is a. The period of conduction of SCR and free wheeling diode respectively are

a < ω

*t*< p and p < ω*t*< (2p + a)a < ω

*t*< p and p < ω*t*< 2pa < ω

*t*< (p + a) and (p + a) < ω*t*< 2pa < ω

*t*< p and p < ω*t*< (2p - a)⇒ In figure, the switch S is initially open and steady state conditions are reached. At

*t*= 0 switch is closed. The initial current through 2C capacitozero

0.0416666666666667

0.0833333333333333

0.125

⇒

**Assertion (A):** The gall tinsley potentiometer is a coordinate potentiometer and has two exactly similar potentiometers.

**Reason (R):** An ac potentiometer may measure the unknown voltage in polar form or rectangular coordinate form.

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 R is false

A is false R is true

⇒ A static excitation system uses

transformer and thyristors

transformer and ac exciter

dc exciter and ac exciter

transformer and dc exciter

⇒ For real and odd signals, the Fourier series coefficient

*a*is_{n}purely imaginary

purely real and even

purely imaginary and odd

purely real and odd

⇒ The noise figure is

3 dB

6 dB

6.6 dB

12 dB

⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here

*u*(*t*) is the unit step function)*x*(*t*) = 125*t*(*u*(*t*) -*u*(*t*- 1)) + (250 - 125*t*) (*u*(*t*- 1) -*u*(*t*- 2)) So that slope overload is avoided, would be2

^{-10}2

^{-8}2

^{-6}2

^{-4}⇒ In solid dielectrics the rate of deterioration doubles for every 10-12°C rise in temperature.

TRUE

FALSE

⇒ The circuits with active pull up are preferred because of their stability for

wired - AND operation

wired - OR operation

bus operated system

reasonable dissipation and speed of operation

⇒ Consider the expression

*b*=*acd*(*xz*). The correct C statement for above expression is*a c d*(*x***z*)*a***c***d** (*x z*)*a***c***d*(*x***z*)None of the above

⇒

Match the following:

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

A. | Title bar | 1. | Window menu |

B. | Control menu box | 2. | First row of window |

C. | start-button | 3. | box in title bar |

D. | Control | 4. | Button on mouse |

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

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

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

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

⇒ Given digits 2, 2, 3, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?

50

51

52

54

⇒ AM-SC stands for

Amplitude Modulated-Suppressed Carrier

Amplitude Modulated-Single Carrier

Amplitude Modulated-Synchronous Carrier

Amplitude Modulated-Self Carrier

⇒ In figure we need an ac ground. The proper value of

1000 μF

100 μF

10 μF

1 μF

⇒ A short circuited stub is preferred to an open circuited stub because an open circuited stub

is more difficult to fabricate and construct

is made of transmission line of different

*Z*_{0}is liable to radiate

is incapable of giving full range of reactance