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Q1. | If two time varying signals of equal magnitude and zero phase displacement are applied to X and Y plates respectively; of CRO, the display will be |

A. | a straight line [Correct Answer] |

B. | a circle [Wrong Answer] |

C. | an ellipse [Wrong Answer] |

D. | a square [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 :**

⇒ Which of the following theorems can be conveniently used to find power consumed in 10 Ω resistor in fig

Thevenin theorem

Maximum power transfer theorem

Millman's theorem

Superposition theorem

⇒ In the circuit of fi

V

_{a}would always lag V

_{b}

V

_{a}would always lead V

_{b}

V

_{a}and V

_{b}would always be in phase

V

_{a}may lag or lead V

_{b}

⇒ Which one is not correct for folded dipole antenna?

High I/P impedance

Low I/P impedance

High bandwidth

Used as reactance compensation network

⇒ For a series RLC circuit bandwidth is ω

_{2}- ω

_{1}= R/2L.

TRUE

FALSE

⇒ A Wien bridge is suitable for

audio frequencies only

radio frequencies only

both audio and radio frequencies

very low frequencies only

⇒ If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given

3.0 x 10

^{8}m/sec

2 x 10

^{8}m/sec

6.28 x 10

^{7}m/sec

2 x 10

^{7}m/sec

⇒ A voltage gain of a CE amplifier connected in collector to base configuration is 50. Collector to base resistor R

_{F}= 1 kΩ, R

_{C}= 4Ω, the O/P resistance R

_{0}=?

800 Ω

813 Ω

817 Ω

819 Ω

⇒

Match the following:

List I (Instrument) | List II (Measured quantity) | ||
---|---|---|---|

A. | Hot wire | 1. | only voltage |

B. | PMMC | 2. | phase |

C. | Electrostatic | 3. | true RMS value |

D. | Lock in Amplifier | 4. | dc value |

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

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

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

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

⇒ In auxiliary commutated chopper, the peak value of thyristor current is

equal to peak value of load current

equal to peak value of capacitor current

sum of peak value of load current and capacitor current

none of the above

⇒ If sequence currents I

_{a1}= 2 ∠- 90°, I

_{a2}= 0.2 ∠ 90° and I

_{a3}= 1.8 ∠ 90°, I

_{a}=

0

1

4

8

⇒ Magnetic hysteresis phenomenon is explained by

motion of domain walls

motion of domain walls and domain rotation

domain rotation

none of the above

⇒ To measure moisture in wood, the most suitable method is

electric conduction

electrical-capacitive

absorption of radiation

equilibrium-moisture Vs humidity

⇒ Which of the following statement is correct?

A FET is a current controlled device

A BJT is always reverse biased

The semi-conductor material of the gate in an N-channel JFET is

*p*-type

JFET has higher input impedance than MOSFET

⇒ The total number of pins in 8085 are

20

30

40

50

⇒ In a BJT CE amplifier circuit the value of coupling capacitor should be such that

its reactance is small for the lowest frequency in the input and output

its reactance is high for the lowest frequency in the input and output

its reactance is zero for the lowest frequency in the input and output

its reactance is infinite for the lowest frequency in the input and output

⇒ For a NAND SR latch of input is the normal resting state of inputs is

S = R = 1

S = 0, R = 1

S = 1, R = 0

S = R = 0

⇒ Secondary emission occurs in

diode

triode

tetrode

pentode

⇒ 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*)

⇒ In the spectrum of a FM wave

the carrier frequency cannot disappear

the carrier frequency disappears when the modulation index is large

the amplitude of any sideband depends on the modulation index

the total number of sidebands depends on the modulation index

⇒ For the logic circuit of the given figure the simplified Boolean expressio

Y = AB + A C

Y = (AB) (A C)

Y = ABC

Y = A B + A C

⇒ In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative

when power factor is less than 0.5 lagging

when power factor is greater than 0.5 lagging

when power factor is less than 0.5

when power factor is unity

⇒ The following components are used to measure power output of a 2 kW TWT amplifier:

- TWTA
- Low pass/high pass filter
- 20 dB attenuator
- 40 dB directional complex with matched load
- Power load

2 - 4 - 1 - 3 - 5

1 - 3 - 4 - 2 - 5

1 - 2 - 4 - 3 - 5

2 - 4 - 1 - 5 - 3

⇒ 2's complement number 00011111 = __________

_{10}

31

-31

11

-11

⇒ The combination of registers in 8085 is B-C, D-E, H-L only.

TRUE

FALSE

⇒ Fortran 77 has six arithmetic operators.

TRUE

FALSE

⇒ In a loss line R

_{L}< Z

_{0}, then

Reflection coefficient is zero

Reflection coefficient is ∞

Reflection coefficient is negative

Reflection coefficient is positive

⇒ Direct-memory-access channel facilitates data to move into and out of the system.

without subroutine

with equal time delay

without programme intervention

on first come first serve basis

⇒ The self bias provides

stable Q point

large voltage gain

high input impedance

high base current

⇒ Magnetic flux can be measured by

capacitive pick up

inductive pick up

resistive pick up

hall effect pick up

⇒ (FE35)

_{16}XOR (CB15)

_{16}is equal to

(3320)

_{16}

(FE35)

_{16}

(FF50)

_{16}

(3520)

_{l6}