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Q1. | The range of RTD using platinum is about |

A. | -100° C to 700°C [Correct Answer] |

B. | -200°C to 1000°C [Wrong Answer] |

C. | 100°C to 1000°C [Wrong Answer] |

D. | about 500°C [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 :**

⇒ In a class C operation V

_{CC}= 30 V and V

_{CE(sat)}= 2 V. The efficiency is

0.9375

0.88

0.0666

0.0333

⇒ The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

TRUE

FALSE

⇒ For an illumination control circuit it is advisable to use a matched TRIAC-DIAC pair.

TRUE

FALSE

⇒ Consider the following statements: The radar pulse must be flat topped to

- allow accurate range measurement
- allow good minimum range
- prevent frequency changes in magnetron
- make the returned echoes easier to distinguish from noise.

1, 2, 3, 4

1, 2, 3

1, 2

1, 3, 4

⇒ A counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time

8 μ sec

10 μ sec

2 μ sec

5 μ sec

⇒ With which decoder it is possible to obtain many code conversions?

2 line to 4 line

3 line to 8 line

not possible with any decoder

4 line to 16 line decoder

⇒ In a transmission line, losses due to dielectric heating are

proportional to voltage and inversely proportional to Z

_{0}

proportional to voltage and proportional to Z

_{0}

proportional to current and proportional to Z

_{0}

proportional to current and inversely proportional to Z

_{0}

⇒ In an end fire array, the radiation pattern

is in the plane of array

is at right angles to array

is at an angle to the plane of array

either (b) or (c)

⇒ A planar array radar uses a high gain planar array antenna.

TRUE

FALSE

⇒ The current wave shown in figure is applied by a 0.1 F capacitor at

*t*= 0. At

*t*= 0

^{+}, the voltage across capacito

0

4 V

10 V

20 V

⇒ A parallel ac circuit in resonance will

act like a resistor of low value

have a high impedance

have current in each section equal to the line current

have a high voltage developed across each inductive and capacitive section

⇒ The mean life time of carrier may range from 10

^{-9}seconds to hundreds of μ-seconds.

TRUE

FALSE

⇒ The power required to produce a gain of 10 dB over 4 W of original power is __________ watt.

80

40

0.4

8

⇒ Which one is correct option about ROC?

ROC does not contain any pole

ROC of finite duration sequence is entire plane expect

*z*= 0,

*z*= ∞

*a*and

*b*

only

*a*

⇒

**Assertion (A):** In angle modulation the transmitted amplitude is constant.

**Reason (R):** Angle modulation has good immunity to noise and interference.

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

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

A is correct but R is wrong

A is wrong but R is correct

⇒ The phase angle curve of G(

*j*ω) H(

*j*ω) is drawn by adding the phase angles of individual factors.

TRUE

FALSE

⇒ If the variance σ

_{x}

^{2}of

*d*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1) is one-tenth the variance σ

_{x}

^{2}of a stationary zero mean discrete time signal

*x*(

*n*), then the normalized autocorrelation function R

_{xx}(

*x*)/σ

_{x}

^{2}at

*k*= 1 is

0.95

0.9

0.1

0.05

⇒ The most commonly used semiconductor material is

silicon

germanium

mixture of silicon and germanium

none of the above

⇒ In the given figure shows a 4 bit serial in parallel out right shift register. The initial contents as shown are 0110. After 3 clock pulses the contents wil

0

101

1010

1111

⇒ Good frequency stability can be available

crystal oscillators

Hartley oscillators

colpitts oscillators

none of the above

⇒ Which one is digital modulation technique?

AM

PAM

PCM

None

⇒ If the mantissa has a sign bit of 0 and the exponent is changed from a negative number to a more positive number the result is

a positive number and closer to zero

a positive number and away from zero

a negative number

a negative number and closer to zero

⇒ The units of F(

*j*ω) are volt-seconds.

TRUE

FALSE

⇒ High intermediate frequency in a superheterodyne receiver

higher than

lower than

equal to

not comparable to

⇒ In a linear op-amp circuit

the product of gain and bandwidth is constant

input can be dc only

input can be ac only

saturation may occur

⇒ The directive gain of λ/2 resonant wire is 1.64.

TRUE

FALSE

⇒ In carbon resistor colour code, the fourth band indicates tolerance.

TRUE

FALSE

⇒ Two numbers are 131 ± 5 and 629 ± 3. The sum of the numbers with range of doubt is

760 ± 8

760 ± 2

760 + 8

760 - 8

⇒ The derivative of unit step function is

unit impulse

ramp with slope 1

impulse

either (a) or (b)

⇒ For the wave shown in figure, the average valu

7.07 A

0.208333333333333

2.5 A

0.5 A