Question # 1

A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:

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q=Q/4

q=Q/2

q=Q

None of these

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

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4 times

1/4 times

8 times

2 times

The current flowing through each resistor of equal resistance in parallel combination is.

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Same

Different

Zero

Infinite

Truth table of logic function.

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Summarize its output values only

Tabulates all its input conditions only

Display all its input and output possibility

Is not base on logic algebra

The electric potential at a mid point in an electric dipole is.

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0 V

0.5 V

1 V

1.5 V

The most common source of an A.C. Voltage is.

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Motor

Cell

Generator

Thermo couple

A solid in which there is not regular arrangement of molecules is called.

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Glassy solid

Amorphous solid

Crystalline solid

Both a and b

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

With the speed of motor, magnitude of back emf

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Remain same

Increase

Decrease

First increases then decreases

Which factor does not affect the conductivity of PN-Junction diode.

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Doping

Temperature

Voltage

Pressure

Black Body radiation spectrum is an example of:

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Atomic spectra

Line spectra

Continuous spectra

None of above

Which of the following is one of the spectral series of atomic hydrogen?

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Brockett series

Balmer series

P fund series

All of above

The use of LDR is in the circuit of.

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Logic gate

Rectifier

Oscillator

High Switch

The potential difference across depletion region in case of Si is

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0.6 volt

0.9 volt

0.7 volt

0.2 volt

How many times, the alpha particle is more massive than electrons.

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6332

7332

8332

9332

Photodiode is used for wave nature of.

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Light

Thermal radiation

Radi waves

Sound waves

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