At 0 K, silicon and germanium behave like monoatomic crystals. True False

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Question
At 0 K, silicon and germanium behave like monoatomic crystals.
Options
A. True
B. False

Correct Answer

False

More questions

1. Match the following:

	List I		List II
A.	Integrated fin line	1.
B.	Dielectric loaded waveguide	2.
C.	Ridge waveguide	3.

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

2. Match the following:

	List I		List II
A.	Television	1.	Either AM or FM used
B.	Radio	2.	Both AM and FM are used
C.	Radar	3.	PCM is used
D.	Data Communication	4.	Digital system

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

3. Match the following:

	List I (Signal)		List II (Value)
A.	AM	1.	0 0.5
B.	DSB - SC	2.	1
C.	SSB	3.	2
D.	FM (? = 2)	4.	16
E.	FM (? = 5)	5.	8

Options
A. A-1, B-3, C-2, D-5, E-4
B. A-3, B-3, C-1, D-5, E-4
C. A-2, B-1, C-4, D-5, E-5
D. A-4, B-2, C-5, D-3, E-1

4. Which of these triggering methods for series connected SCRs use LASCR in the gate circuit?
Options
A. Resistance triggering
B. Simultaneous triggering
C. Sequential triggering
D. Optical triggering

5. During processing the instructions, data, intermediate results and final results in a computer are held in
Options
A. CPU
B. ALU
C. Primary memory
D. Secondary memory

6. Assertion (A): Snubber circuit has an RC series circuit in parallel with SCR
Reason (R): Voltage across a capacitor can not change instantaneously.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

7. Assertion (A): Typical value of thermal resistance from source to sink of an SCR is about 0.3� C/W
Reason (R): Heat sinks of thyristors are generally made of aluminium.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

8. Assertion (A): A half wave controlled rectifier has poorer efficiency and higher ripple factor than a full wave controlled rectifier.
Reason (R): The use of a freewheeling diode in half wave controlled rectifier circuit improves the waveform of load current and circuit power factor.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

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