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Q1. | Super high frequency means more than 3000 MHz. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The video heads, in VCR, feed the other circuit

directly windings

through a transformer having two rotating windings

through a transformer having two stationary windings

through a transformer having one stationary and one rotatory winding

⇒ Three impedances (3 +

*j*4) Ω each are connected in star. The impedances of equivalent delta circuit will be

3 -

*j*4 Ω each

9 +

*j*12 Ω each

9 -

*j*12 Ω each

3 +

*j*4, 3 -

*j*4 and 4 -

*j*3 Ω

⇒ Two resistances R

_{1}= 18.7 Ω. and R

_{2}= 3.624 Ω in series. The total resistance to the appropriate number of significant figures is

22.324 Ω

22.32 Ω

22.3 Ω

22 Ω

⇒ The resistance of a standard conductor.

increases with frequency

same for

*ac*and

*dc*

increases with frequency

increases as square root of frequency

⇒ An FM signal with deviation δ is passed through mixer. Its frequency is reduced five fold. The deviation in output of mixer is

0.28

δ

5 δ

very very high

⇒ An iron specimen has µ

_{r}= 1000 when B = 0.3 T. If B = 0.35 T, µ

_{r}

will be 1000

will be less than 1000

will be more than 1000

may be more or less than 1000

⇒ Auto correlation function

is an even function of t

is an odd function of t

may be an even or odd function of t

is both an odd and even function of t

⇒ Program counter in a digital computer

counts the number of programs run in the machine

counts the number of times a subroutine

counts the number of time the loops are executed

points the memory address of the current or the next instruction

⇒ At a frequency less than the resonant frequency

series circuit is inductive and parallel circuit is capacitive

series circuit is capacitive and parallel circuit is inductive

both circuits are capacitive

both circuits are inductive

⇒ If the potential functions V

_{1}and V

_{2}satisfy Laplace's equation within a closed region and assume the same values on its surface, then which of the following is correct?

V

_{1}and V

_{2}are identical

V

_{1}is inversely proportional to V

_{2}

V

_{1}has the same direction as V

_{2}

V

_{1}has the same magnitude as V

_{2}but has different direction

⇒ Consider the following logical IF statement in Fortran 77

IF (SALT - PEPPER) 13, 11, 11

IF (SALT - PEPPER) 13, 13, 11

IF (SALT - PEPPER) 11, 13, 13

⇒ When a

*p*-

*n*junction is forward biased. The width of depletion layer decreases.

TRUE

FALSE

⇒ In an ideal junction transistor the impurity concentration in emitter (E ), base (B) and collector (C) is such that

E > B > C

B > C > E

C > E > B

C = E = B

⇒ When a material becomes a superconductor, its resistivity becomes

very small

zero

about 10% of normal value

about 20% of normal value

⇒ For overdamped systems a quadratic factor in transfer function can be replaced by two first order factors with real poles

TRUE

FALSE

⇒ Two coil have their axis perpendicular to each other. The coefficient of coupling

*k*is

1

0.5

more than 0 but less than 1

0

⇒ In which function is each term known as maxterm?

SOP

POS

Hybrid

SOP and Hybrid

⇒ In figure, the value of R shoul

12 Ω

6 Ω

3 Ω

1.5 Ω

⇒ A current of 3.25 A is flowing through a resistance of 34.98 Ω. The voltage drop across resistance to the appropriate number of significant figures is

113.685 V

113.68 V

113.6 V

114 V

⇒ The code which provides for parity check is

Baudot

ASCII

EBCDIC

Excess-3

⇒ In a medium if ε, μ and σ are constant throughout the medium, then it is known as

perfect vacuum

distributed medium

homogeneous medium

dielectric medium

⇒ An average response rectifier type electronic voltameter has a d.c. voltage of 10 V applied to it. What is the meter reading?

7.1 V

10 V

11.1 V

22.2 V

⇒ Consider the following statements about radar Beacon

- It is also called transponder.
- It includes pulse transmitter, receiver and antenna.
- It replies with full power even when the signal receives is weak.

All

1 and 2 only

2 and 3 only

2 only

⇒ Maximum power transfer theorem finds application in

power circuits

distribution circuits

communication circuits

both power and communication circuits

⇒ The number of branches of root locus plot is equal to

the number of roots of characteristic equation

double the number of roots of characteristic equation

the number of roots of characteristic equation minus one

the number of roots of characteristic equation plus one

⇒ Which of these is the most recent display device?

LED

LCD

VF

(a) and (c)

⇒

**Assertion (A):** Tristate logic is used for bus oriented systems

**Reason (R):** The outputs of a tristate logic are 0, 1 and indeterminant.

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 true, R is false

A is false, R is true

⇒ A steel bar needs 1200 AT to magnetise it. The voltage that must be applied to the magnetising coil of 100 turns and 10 Ω resistance is __________ volt.

120

12

1200

10

⇒ If a two-port network is reciprocal as well as symmetrical, which one of the following relationships is correct?

Z

_{12}= Z

_{21}and Z

_{11}= Z

_{22}

Y

_{12}- Y

_{21}and Y

_{11}- Y

_{22}

AD - BC = 1 and A = D

all of the above

⇒ In a plate modulated class C amplifier, the peak supply voltage is V. The maximum plate-cathode voltage can be

1 V

1.5 V

2.5 V

4 V