A magnet does not attract nickel iron copper iron and copper Only copper is non-

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Correct Answer

copper

Explanation

Only copper is non-magnetic.

More questions

1. A resistive microwave load with Z_L = 150 ? is connected to 50 ? coaxial line. SWR is
Options
A. more than 3
B. less than 3
C. equal to 3
D. either (a) or (c)

2. Match the following:

	List I (Oscillator)		List II (Features)
A.	Wien Bridge	1.	RF oscillator, uses two inductors and one capacitor
B.	Colpitt's	2.	LC oscillator for radio frequencies uses three capacitances and one inductance
C.	Hartley	3.	RC oscillator for audio frequencies
D.	Clapp	4.	RF oscillator, uses two capacitances and one inductance

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

3. The number of tightly bound electrons in silicon atom are
Options
A. 14
B. 10
C. 6
D. 4

4. Assertion (A): A p-n junction has high resistance in reverse direction.
Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true

5. In the basic series inverter circuit, the source current has
Options
A. low harmonic content
B. high harmonic content
C. low or high harmonic content depending on firing angle
D. zero harmonic content

8. Assertion (A): If difference between static and optical dielectric constant is high, the mechanical compressiblity of that material is also high.
Reason (R): For soft ions, ionic polarization per unit field is higher than that of hard ions.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

9. A specimen of metal has n valence electrons per m³. If v_x is the average velocity of these electrons, each having a charge e, the current density J is
Options
A. J = ne v_x
B. J = - ne v_x
C. J =
D. J =

10. Match the following:

	List I		List II
A.	Interface	1.	A measure of rate of data transmission
B.	A bit	2.	A binary digit
C.	Band speed	3.	The common boundary between various sections and subsections
		4.	A/D converter

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

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