In a given process of an ideal gas, dW=0 and the dQ

The pressure will remain constant

Population inversion is obtained at a p-n junction by __________

Heavy doping of p-type material

Heavy doping of n-type material

Light doping of p-type material

Heavy doping of both p-type and n-type material

The energy-level occupation for a semiconductor in thermal equilibrium is described by the __________

Cumulative distribution function

Boltzmann distribution function

Probability distribution function

Fermi-Dirac distribution function

Cumulative distribution function

The forces of the collinear system and the couple can’t be simplified together as one is the cause and the other is the effect.

The statement is correct but the reason given is also wrong

The statement is correct and the reason given is also correct

The statement is wrong but the reason given is also correct

The statement is wrong and the reason given is also wrong

The statement is correct but the reason given is also wrong

The forces of the parallel system and the couple can’t be simplified together as one is the cause and the other is the effect.

The statement is correct but the reason given is also wrong

The statement is correct and the reason given is also correct

The statement is wrong but the reason given is also correct

The statement is wrong and the reason given is also wrong

The statement is correct but the reason given is also wrong

The couple is simplified easily with the help of left hand rule. But the forces simplification is not possible as there is no such system of rules so that the forces can be simplified.

The first part of the statement is false and other part is false too

The first part of the statement is false and other part is true

The first part of the statement is false and other part is false too

The first part of the statement is true and other part is false

The first part of the statement is true and other part is true too

The couple and the other two force systems can be easily simplified.

Statement is right if we remove the ‘couple’ part

Statement is right if we remove the ‘force’ part

The system of the collinear and the parallel force are simplified as ______________

Such simplification is not possible

The simplified collinear force system gives us a net force and the parallel force system gives us a simplified force, and then we add it vectorially

Such simplification is not possible

The simplification is usually done by not considering the directions of the both

The simplification is done by considering the rotations only

What is a collinear system of forces?

Forces cannot form a collinear system of forces, it is not possible

The force system having all the forces parallel to each other

The force system having all the forces perpendicular to each other

The force system having all the forces emerging from a single point

Forces cannot form a collinear system of forces, it is not possible

Which of the following is true about chemical dissolution of hydrogen-terminated silicon in HF based solutions.

Si atoms are replaced by F atoms

H atoms are replaced by F atoms

F− ions are replaced by Si atoms

H atoms are replaced by F− ions

1967 + Mcqs in Test in Csharp Page 3 McqOptions

101.	The temperature of sink of Carnot engine is 27°C. Efficiency is 25%. Then ___________
A.	227°C
B.	327°C
C.	127°C
D.	27°C
Answer» D. 27°C

Discussion

102.	The temperature of reservoir of Carnot’s engine operating with an efficiency of 70% is 1000K. What is the temperature of source?
A.	300K
B.	400K
C.	500K
D.	700K
Answer» B. 400K

Discussion

103.	In a given process of an ideal gas, dW=0 and the dQ<0. Then for the gas ___________
A.	The temperature will decreases
B.	The temperature will increase
C.	The pressure will remain constant
D.	The temperature will increase
Answer» B. The temperature will increase

Discussion

104.	A GaAs injection laser has a threshold current density of 2.5*103Acm-2 and length and width of the cavity is 240μm and 110μm respectively. Find the threshold current for the device.
A.	663 mA
B.	660 mA
C.	664 mA
D.	712 mA
Answer» C. 664 mA

Discussion

105.	Population inversion is obtained at a p-n junction by __________
A.	Heavy doping of p-type material
B.	Heavy doping of n-type material
C.	Light doping of p-type material
D.	Heavy doping of both p-type and n-type material
Answer» E.

Discussion

106.	Calculate the radioactive minority carrier lifetime in gallium arsenide when the minority carriers are electrons injected into a p-type semiconductor region which has a hole concentration of 1018cm-3. The recombination coefficient for gallium arsenide is 7.21*10-10cm3s-1.
A.	2ns
B.	1.39ns
C.	1.56ns
D.	2.12ms
Answer» C. 1.56ns

Discussion

107.	In the given equation, what does p stands for?
A.	Permittivity
B.	Probability
C.	Holes
D.	Crystal momentumView Answer
Answer» E.

Discussion

108.	The majority of the carriers in a p-type semiconductor are __________
A.	Holes
B.	Electrons
C.	Photons
D.	Neutrons
Answer» B. Electrons

Discussion

109.	The energy-level occupation for a semiconductor in thermal equilibrium is described by the __________
A.	Boltzmann distribution function
B.	Probability distribution function
C.	Fermi-Dirac distribution function
D.	Cumulative distribution function
Answer» D. Cumulative distribution function

Discussion

110.	A perfect semiconductor crystal containing no impurities or lattice defects is called as __________
A.	Intrinsic semiconductor
B.	Extrinsic semiconductor
C.	Excitation
D.	Valence electron
Answer» B. Extrinsic semiconductor

Discussion

111.	Most abundant and widely distributed tissues of the body is___________
A.	Organ system
B.	Muscular tissue
C.	Nervous tissue
D.	Connective tissue
Answer» E.

Discussion

112.	Given Op-amp is ideal. Calculate vo if va=1v and vb=0v.
A.	-4v
B.	-2.5v
C.	4v
D.	2.5v
Answer» C. 4v

Discussion

113.	Calculate the gain for the Op-amp given.
A.	0.719
B.	2.572
C.	1.390
D.	1.237
Answer» D. 1.237

Discussion

114.	Find the gain for the following circuit.
A.	-2
B.	2
C.	-1
D.	1
Answer» B. 2

Discussion

115.	In the circuit of Op-amp given V- stands for _________
A.	Non-inverting input
B.	Non-inverting output
C.	Inverting input
D.	Inverting output
Answer» D. Inverting output

Discussion

116.	Op-amp was introduced by __________
A.	Fairchild
B.	Maxwell
C.	Rutherford
D.	Sahani
Answer» B. Maxwell

Discussion

117.	The depth of structural element is increased by adding ____________
A.	Excess concrete
B.	Low concrete
C.	Prestressed concrete
D.	Dies
Answer» B. Low concrete

Discussion

118.	In method 3 the restoration is done y addition of ____________
A.	Metal sleeve jacket
B.	Aluminium jacket
C.	Steel jacket
D.	Water proof jacket
Answer» B. Aluminium jacket

Discussion

119.	Find the angle between the horizontal and vertical forces acting in the given figure consisting of a beam with various sections.
A.	49.4˚
B.	9.4˚
C.	4.4˚
D.	40.4˚View Answer
Answer» B. 9.4˚

Discussion

120.	The forces of the collinear system and the couple can’t be simplified together as one is the cause and the other is the effect.
A.	The statement is correct and the reason given is also correct
B.	The statement is wrong but the reason given is also correct
C.	The statement is wrong and the reason given is also wrong
D.	The statement is correct but the reason given is also wrong
Answer» D. The statement is correct but the reason given is also wrong

Discussion

121.	The forces of the parallel system and the couple can’t be simplified together as one is the cause and the other is the effect.
A.	The statement is correct and the reason given is also correct
B.	The statement is wrong but the reason given is also correct
C.	The statement is wrong and the reason given is also wrong
D.	The statement is correct but the reason given is also wrong
Answer» D. The statement is correct but the reason given is also wrong

Discussion

122.	The couple is simplified easily with the help of left hand rule. But the forces simplification is not possible as there is no such system of rules so that the forces can be simplified.
A.	The first part of the statement is false and other part is true
B.	The first part of the statement is false and other part is false too
C.	The first part of the statement is true and other part is false
D.	The first part of the statement is true and other part is true too
Answer» B. The first part of the statement is false and other part is false too

Discussion

123.	The resultant force is equal to the _______ of all the forces.
A.	Sum
B.	Product
C.	Subtraction
D.	Division
Answer» B. Product

Discussion

124.	The couple and the other two force systems can be easily simplified.
A.	Statement is wrong
B.	Statement is right
C.	Statement is right if we remove the ‘couple’ part
D.	Statement is right if we remove the ‘force’ part
Answer» C. Statement is right if we remove the ‘couple’ part

Discussion

125.	The system of the collinear and the parallel force are simplified as ______________
A.	The simplified collinear force system gives us a net force and the parallel force system gives us a simplified force, and then we add it vectorially
B.	Such simplification is not possible
C.	The simplification is usually done by not considering the directions of the both
D.	The simplification is done by considering the rotations only
Answer» B. Such simplification is not possible

Discussion

126.	Find the total resultant moment acting in the given figure consisting of a beam with various sections.
A.	37.5Nm
B.	7.5Nm
C.	79.5Nm
D.	370.5NmView Answer
Answer» B. 7.5Nm

Discussion

127.	Find the total resultant force acting in the given figure consisting of a beam with various sections.
A.	350N
B.	461N
C.	250N
D.	300N
Answer» C. 250N

Discussion

128.	What is a collinear system of forces?
A.	The force system having all the forces parallel to each other
B.	The force system having all the forces perpendicular to each other
C.	The force system having all the forces emerging from a single point
D.	Forces cannot form a collinear system of forces, it is not possible
Answer» D. Forces cannot form a collinear system of forces, it is not possible

Discussion

129.	A few leftmost bits in each address of IPv6 address define its category is called ________
A.	Prefix type
B.	Postfix type
C.	Reserved type
D.	Local type
Answer» B. Postfix type

Discussion

130.	In subcategories of reserved address in IPv6, address that is used by a host to test itself without going into network is called _________
A.	Unspecified address
B.	Loopback address
C.	Compatible address
D.	Mapped address
Answer» C. Compatible address

Discussion

131.	Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits ______
A.	96 to 127
B.	0 to 63
C.	80 to 95
D.	64 to 79
Answer» B. 0 to 63

Discussion

132.	Suppose two IPv6 nodes want to interoperate using IPv6 datagrams, but they are connected to each other by intervening IPv4 routers. The best solution here is ________
A.	Use dual-stack approach
B.	Tunneling
C.	No solution
D.	Replace the system
Answer» C. No solution

Discussion

133.	Absorption meters cannot be used to detect broken bones.
A.	True
B.	False
Answer» C.

Discussion

134.	In absorption meter, the change in thickness of aluminium required for different samples is a function of the difference in which of the following parameters?
A.	Amount
B.	Concentration
C.	Colour
D.	Composition
Answer» E.

Discussion

135.	Absorption meter is __________ and ____________ of the chemical state of the element concerned.
A.	Non-destructive, independent
B.	Destructive, independent
C.	Non-destructive, dependent
D.	Destructive, dependent
Answer» B. Destructive, independent

Discussion

136.	MpSi structures have a random distribution of pores.
A.	True
B.	False
Answer» B. False

Discussion

137.	According to morphological details, pSi can be divided as sponge-like pSi and pSi featuring cylindrical pores.
A.	True
B.	False
Answer» B. False

Discussion

138.	Si + 4HF2— + h+ -> SiF62- + 2HF + _____ + e—. Complete the reaction for dissolution of hydrogen-terminated Si in HF based solution.
A.	F2
B.	SiF4
C.	H2
D.	Si-H
Answer» D. Si-H

Discussion

139.	To create a neutralized Si–F bound, an electronic hole (h+) is generated.
A.	True
B.	False
Answer» B. False

Discussion

140.	Which of the following is true about chemical dissolution of hydrogen-terminated silicon in HF based solutions.
A.	Si atoms are replaced by F atoms
B.	H atoms are replaced by F atoms
C.	F− ions are replaced by Si atoms
D.	H atoms are replaced by F− ions
Answer» E.

Discussion

141.	A large tank of height h is half-filled with a liquid of density ρ and other half-filled with a liquid of density 4ρ. A similar tank is half-filled with a liquid of density 2ρ and other-half filled with another liquid of density 3ρ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)
A.	1 : 1
B.	1 : 2
C.	2 : 1
D.	1 : 3
Answer» B. 1 : 2

Discussion

142.	A large tank of height h is filled with a liquid of density ρ. A similar tank is half-filled with this liquid and other-halffi lled with another liquid of density 2ρ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)
A.	2 : 3
B.	2 : √3
C.	√2 : 3
D.	√2 : √3
Answer» E.

Discussion

143.	A gate of length 5 m is hinged at A as shown to support a water column of height 2.5 m. What should be the minimum mass per unit width of the gate to keep it closed?
A.	3608
B.	4811
C.	7217
D.	9622
Answer» E.

Discussion

144.	A container is lled with two liquids of densities ρ and 2ρ up to heights h and eh respectively. What will be the ratio of the depths of the centres of pressure of the upper face BC and the lower face AB?
A.	1 : 2
B.	3 : 4
C.	2 : 3
D.	3 : 2
Answer» D. 3 : 2

Discussion

145.	A container is lled with two liquids of densities ρ and 2ρ up to heights h and eh respectively. What will be the ratio of the total pressure on the lower face AB and on the upper face BC?
A.	1 : 1
B.	3 : 1
C.	2 : 1
D.	3 : 2
Answer» C. 2 : 1

Discussion

146.	A square lamina (each side equal to 2m) is submerged vertically in water such that the upper edge of the lamina is at a depth of 0.5 m from the water surface. If the pressure on the surface is 12 bar, what will be the total water pressure (in kN) on the lamina?
A.	39
B.	59
C.	64
D.	71
Answer» D. 71

Discussion

147.	The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the depth (in m) of it’s centre of pressure?
A.	1.08
B.	1.58
C.	2.08
D.	2.58
Answer» D. 2.58

Discussion

148.	The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the water force (in kN) on the lamina?
A.	78
B.	118
C.	157
D.	196
Answer» D. 196

Discussion

149.	The greatest and the least depth of a circular plate of 4 m diameter from the free surface of water are 3m and 1 m respectively as shown. What will be the depth (in m) of it’s centre of pressure?
A.	1.125
B.	1.25
C.	2.125
D.	2.25
Answer» D. 2.25

Discussion

150.	The greatest and the least depth of a circular plate of 4 m diameter from the free surface of water are 3m and 1 m respectively as shown. What will be the total pressure in (kN) on the plate?
A.	123
B.	185
C.	246
D.	308
Answer» D. 308

Discussion

Explore topic-wise MCQs in Csharp.

The temperature of sink of Carnot engine is 27°C. Efficiency is 25%. Then ___________

The temperature of reservoir of Carnot’s engine operating with an efficiency of 70% is 1000K. What is the temperature of source?

In a given process of an ideal gas, dW=0 and the dQ<0. Then for the gas ___________

A GaAs injection laser has a threshold current density of 2.5*103Acm-2 and length and width of the cavity is 240μm and 110μm respectively. Find the threshold current for the device.

Population inversion is obtained at a p-n junction by __________

Calculate the radioactive minority carrier lifetime in gallium arsenide when the minority carriers are electrons injected into a p-type semiconductor region which has a hole concentration of 1018cm-3. The recombination coefficient for gallium arsenide is 7.21*10-10cm3s-1.

In the given equation, what does p stands for?

The majority of the carriers in a p-type semiconductor are __________

The energy-level occupation for a semiconductor in thermal equilibrium is described by the __________

A perfect semiconductor crystal containing no impurities or lattice defects is called as __________

Most abundant and widely distributed tissues of the body is___________

Given Op-amp is ideal. Calculate vo if va=1v and vb=0v.

Calculate the gain for the Op-amp given.

Find the gain for the following circuit.

In the circuit of Op-amp given V- stands for _________

Op-amp was introduced by __________

The depth of structural element is increased by adding ____________

In method 3 the restoration is done y addition of ____________

Find the angle between the horizontal and vertical forces acting in the given figure consisting of a beam with various sections.

The forces of the collinear system and the couple can’t be simplified together as one is the cause and the other is the effect.

The forces of the parallel system and the couple can’t be simplified together as one is the cause and the other is the effect.

The couple is simplified easily with the help of left hand rule. But the forces simplification is not possible as there is no such system of rules so that the forces can be simplified.

The resultant force is equal to the _______ of all the forces.

The couple and the other two force systems can be easily simplified.

The system of the collinear and the parallel force are simplified as ______________

Find the total resultant moment acting in the given figure consisting of a beam with various sections.

Find the total resultant force acting in the given figure consisting of a beam with various sections.

What is a collinear system of forces?

A few leftmost bits in each address of IPv6 address define its category is called ________

In subcategories of reserved address in IPv6, address that is used by a host to test itself without going into network is called _________

Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits ______

Suppose two IPv6 nodes want to interoperate using IPv6 datagrams, but they are connected to each other by intervening IPv4 routers. The best solution here is ________

Absorption meters cannot be used to detect broken bones.

In absorption meter, the change in thickness of aluminium required for different samples is a function of the difference in which of the following parameters?

Absorption meter is __________ and ____________ of the chemical state of the element concerned.

MpSi structures have a random distribution of pores.

According to morphological details, pSi can be divided as sponge-like pSi and pSi featuring cylindrical pores.

Si + 4HF2— + h+ -> SiF62- + 2HF + _____ + e—. Complete the reaction for dissolution of hydrogen-terminated Si in HF based solution.

To create a neutralized Si–F bound, an electronic hole (h+) is generated.

Which of the following is true about chemical dissolution of hydrogen-terminated silicon in HF based solutions.

A gate of length 5 m is hinged at A as shown to support a water column of height 2.5 m. What should be the minimum mass per unit width of the gate to keep it closed?

A container is lled with two liquids of densities ρ and 2ρ up to heights h and eh respectively. What will be the ratio of the depths of the centres of pressure of the upper face BC and the lower face AB?

A container is lled with two liquids of densities ρ and 2ρ up to heights h and eh respectively. What will be the ratio of the total pressure on the lower face AB and on the upper face BC?

A square lamina (each side equal to 2m) is submerged vertically in water such that the upper edge of the lamina is at a depth of 0.5 m from the water surface. If the pressure on the surface is 12 bar, what will be the total water pressure (in kN) on the lamina?

The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the depth (in m) of it’s centre of pressure?

The highest and lowest vertices of a diagonal of a square lamina (each side equal to 4m) are 1 m and 3 m respectively as shown. What will be the water force (in kN) on the lamina?

The greatest and the least depth of a circular plate of 4 m diameter from the free surface of water are 3m and 1 m respectively as shown. What will be the depth (in m) of it’s centre of pressure?

The greatest and the least depth of a circular plate of 4 m diameter from the free surface of water are 3m and 1 m respectively as shown. What will be the total pressure in (kN) on the plate?

Absorption meter is and __ of the chemical state of the element concerned.