PHYSICS MCQ_02(MEASUREMENT_02)

Q.16 In Hot point probe measurement if carriers are positive, current flow in_____ direction.
A. Same
B. Opposite
C. Both A and B
D. None of the above
Ans.: B
Q.17 In Hot point probe measurement if hot side is negative, the sample is ___type
A. P
B. N
C. PN
D. NP
Ans.: A
Q.18 CVT technique use for ____measurement.
A. Capacitance of hole
B. Junction capacitance
C. Material capacitance
D. Layer capacitance
Ans.: B
Q.19 In CVT method_____ behaves like capacitor.
A. Hall
B. Charge particle
C. Depletion region
D. Conduction region
Ans.: C
Q.20 Diffuse capacitance occurs due to stored charge of ____ carrier.
A. Minority
B. Majority
C. Hall
D. all of the above
Ans.: A
Q.21 IN diode I-V characteristic Ideality factor for real diode is?
A. Less then 1
B. Greater than 1
C. equal to 1
D. zero
Ans.: B
Q.22 Transient Spectroscopy used in which method?
A. DALT
B. DLTS
C. DSTL
D. DTLS
Ans.: B
Q.23 DLTS method use for identify ____in semiconductor
A. current flow
B. doping level
C. impurities
D. Mobility charge
Ans.: C
Q.24 UV spectroscopy method applicable for ____ measurement
A. Energy bandgap
B. Enerhy flow
C. Energy emission
D. Energy diffusion
Ans.: A
Q.25 Which instrument used in UV spectroscopy?
A. UV emission photometer
B. UV band photometer
C. UV spectro photometer
D. UV diffusion photometer
Ans.: C
Q.26 In UV spectroscopy Tungsten lamp use for achieving____
A. Heat
B. Light
C. Laser beam
D. Flood light
Ans.: C
Q.27 Which relation used to determine bandgap in semiconductors?
A. Traser
B. Tauc
C. Taupy
D. Tenli
Ans.: B
Q.28 In UV spectroscopy which principle used for energy bandgap measurement?
A. Spectrum combination
B. Spectrum desolation
C. Spectrum absorption
D. Spectrum modification
Ans.: C