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Q1. | A piece of iron is placed in a magnetic field |

A. | the magnetic field will not be affected [Wrong Answer] |

B. | the magnetic lines of force will bend to pass through the piece [Correct Answer] |

C. | the magnetic lines of force will bend away from the piece [Wrong Answer] |

D. | any of the above depending on type of iron [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 :**

⇒ The following graph, the number of trees (P) and the number of cut-sets (Q)

P = 2, Q = 2

P = 2, Q = 6

P = 4, Q = 6

P = 4, Q = 10

⇒ Figure repres

Integrator

Differentiator

High Pass Filter

Band Pass Filter

⇒ CMRR of a difference amplifier is equal to

(A

_{v}')/(A

_{com})

A

_{v}/A

_{com}

A

_{com}/A

_{v}'

(A

_{v})/(A

_{com})

^{2}

⇒ In a perfect conductor the resistor noise is

maximum

zero

very high

almost infinite

⇒ The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

very low

low

high

almost zero

⇒ An XOR gate with 8 variable is as foll

255

127

128

256

⇒

**Assertion (A):** L[*e*^{-at}*f*(*t*)] = F(*s* + *a*)

**Reason (R):** In use of Laplace transform method, initial conditions may be neglected.

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

⇒ Figure uses 10 V zener diode. The minimum and maximum current through series resistance

10 mA and 30 mA

20 mA and 40 mA

0 and 30 mA

0 and 40 mA

⇒ In case of low level amplitude modulation system, the amplifiers following the modulated stage must be

class C amplifiers

linear devices

non-linear devices

harmonic devices

⇒ The function in the given figure can be writte

*u*(

*t*- 1) sin p (

*t*- 1) -

*u*(

*t*- 3) sin p (

*t*- 3) +

*u*(

*t*- 4) sin p (

*t*- 4) -

*u*(

*t*- 6) sin p (

*t*- 6)

*u*(

*t*- 1) sin p (

*t*- 1) -

*u*(

*t*- 3) sin p (

*t*- 3) +

*u*(

*t*- 4) sin p (

*t*- 4)

*u*(

*t*- 1) sin p (

*t*- 1) +

*u*(

*t*- 4) sin p (

*t*- 4)

*u*(

*t*- 1) sin 2p (

*t*- 1) +

*u*(

*t*- 4) sin 2p (

*t*- 4)

⇒ The function (sin

*x*)/

*x*

has a period 2p, decays with increasing

*x*and has zeros at

*n*p,

*n*= ± 1, ± 2

has a period p

has a period p/2

has a period 2p, decays with increasing

*x*, is an even function and has zeros at

*n*p,

*n*= ± 1, ± 2

⇒ A quantization error is an essential aspect of ADC

TRUE

FALSE

⇒ A cut set schedule shows

incidence of branches to loops

incidence of branches to nodes

incidence of nodes to loops

none of the above

⇒ A pulse function can be represented as difference of two equal step functions.

TRUE

FALSE

⇒ Dynamic memory cells are constructed using

FETs

MOSFETs

Transistors

Flip flops

⇒ Which one of the following is a cut set of the graph in the given fig

1, 2, 3, and 4

2, 3, 4, and 6

1, 4, 5, and 6

1, 3, 4, and 5

⇒ The impulse response

*h*(

*t*) of a linear time-invariant continuous time system is described by

*h*(

*t*) = exp (a

*t*)

*u*(

*t*) + exp (β

*t*)

*u*(-

*t*), where

*u*(

*t*) denotes the unit step function, and a and β are constants. This system is stable if

a is positive and β is positive

a is negative and β is negative

a is positive and β is negative

a is negative and β is positive

⇒ In a series resonant circuit Q is more than 10. Then the lower half power frequency ω

_{1}, and resonant frequency ω

_{0}are related as

ω

_{1}= ω

_{0}+ bandwidth

ω

_{1}= ω

_{0}+ 0.5 (bandwidth)

ω

_{1}= ω

_{0}- 0.5 (bandwidth)

ω

_{1}= ω

_{0}+ bandwidth

⇒ The device most likely to be found in an SSB transmitter is

class C audio amplifier

tuned modulator

class B RF amplifier

class A RF amplifier

⇒ A decoder can be used as a demultiplexer.

TRUE

FALSE

⇒ A flip flop is a

combinational circuit

memory element

arithmetic element

memory or arithmetic element

⇒ It is required to study transients during switching process. Which CRO should be preferred?

Ordinary CRO

Dual beam CRO

Dual trace CRO

Storage oscilloscope

⇒ In Z

_{RC}(

*s*) = constant at

*s*= 0, the last element in first Foster cauer realization is

R

C

R and C in series

R and C in parallel

⇒ A current tracer responds to

steady current only

pulsating current only

both pulsating and steady current

none of the above

⇒ In the given figure power meters at A and B indicate 1 mW and 110 μW respectively. VSWR of lin

1.5

2

2.5

3

⇒ Characteristic wave impedance is

ε/μ

(ε/μ)

^{1/2}

E

_{x}/H

_{y}

H

_{y}/E

_{x}

⇒ Determine the potential difference between the points A and B in the steady s

40 V

60 V

25 V

75 V

⇒ The following statements are true with respect to "Cascode Amplifier".

- The reduction in
*h*_{12}and Miller capacitance result in negligible reverse internal feedback. - A's is large loads cannot be connected.
- As a narrow band amplifier, it provides small range of
*c*_{μ}is reduced. - As a narrow band amplifier it provides small range of frequencies parameters the effect of
*c*_{μ}reduces.

only 1

only 1 and 4

only 2 and 4

only 1 and 3

⇒ The phase velocity

*v*in a transmission line is

LC

C/L

L/C

1/LC

⇒ Available multiplexer IC package can have a maximum of 8 inputs.

TRUE

FALSE