Q.1 ____ shows ability to travel charge along thin films in conductor and semiconductor.
A. Sheet resistance
B. conductor resistance
C. Module resistance
D. Specimen resistance
Ans.: A
Q.2 Which parameter(s) can be determined from sheet resistance?
A. Resistivity
B. Conductivity
C. Both a and B
D. None
Ans.: C
Q.3 Four Probe method use for measuring _________
A. Capacitance
B. Inductance
C. Resistance
D. Impedance
Ans.: D
Q.4 Which measuring instrument are use in Four Probe method?
A. Ammeter and Voltmeter
B. Ammeter only
C. Voltmeter only
D. None of above
Ans.: A
Q.5 In Four Probe method, for bulk material hemisphere area considered as____
A. 2πr^2
B. . 2πx^2
C. 2πr
D. 2πx
Ans.: B
Q.6 In Four Probe method, for thin material circumference area considered as____?
A. 2πb
B. 2πd
C. 2πl
D. 2πt
Ans.: D
Q.7 Identify application which is not suitable with Four Probe method.
A. Remote sensing area
B. Fuel cell bipolar plate
C. Resistance thermometers
D. Inductance controlling
Ans.: D
Q.8 Vander Pauw measurement use for _____measurement.
A. Resistivity
B. Inductance
C. Capacitance
D. Conductance
Ans.: A
Q.9 Identify property which can not be justified by Vander Pauw measurement
A. Doping type
B. Material width
C. Carrier density of majority charge carrier
D. mobility of charge carrier
Ans.: B
Q.10 Identify condition which is not applicable during Vander Pauw measurement.
A. Homogeneous sample
B. less thickness
C. less capacitance
D. Uniform thickness
Ans.: C
Q.11 Hall effect invented by
A. Markel hall
B. Edwin hall
C. Sam hall
D. Austin hall
Ans.: B
Q.12 In hall effect electron placed in magnetic field, it experience ____force proportional to strength of field.
A. Lenz
B. Faradays
C. Lorentz
D. Gauss
Ans.: C
Q.13 Choose correct Lorentz force equation in hall effect
A. F = qeB
B. F = qsB
C. F = qlB
D. f = qvB
Ans.: D
Q.14 Which method use for determine sample is P type or N type?
A. Cold point probe measurement
B. Hot point probe measurement
C. Wide point probe measurement
D. Area point probe measurement
Ans.: B
Q.15 In Hot point probe measurement if carriers are positive, current flow in_____ direction.
A. Same
B. Opposite
C. Same and opposite both
C. None of the above
Ans.: A