Explore topic-wise MCQs in Chemical Engineering.

This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1251.

In which of the following region of the log periodic array, maximum radiation takes place?

A. Inactive transmission line region
B. Active region
C. Inactive stop region
D. Reflective region
Answer» C. Inactive stop region
1252.

In which of the following region in LPDA, the current leads the base voltage?

A. Inactive transmission line region
B. Active region
C. Inactive stop region
D. Reflective region
Answer» B. Active region
1253.

The dipoles in the inactive stop region offer ________ impedance.

A. Capacitive
B. Resistive
C. Inductive
D. Characteristic
Answer» D. Characteristic
1254.

The dipoles in the active region offer ________ impedance.

A. Capacitive
B. Resistive
C. Inductive
D. Characteristic
Answer» C. Inductive
1255.

The dipoles in the inactive transmission region offer ________ impedance.

A. Capacitive
B. Resistive
C. Inductive
D. Characteristic
Answer» B. Resistive
1256.

Which of the following is the condition for the Log periodic antenna to be inactive transmission line region?

A. \(L=\frac{λ}{2} \)
B. \(L > \frac{λ}{2} \)
C. \(L < \frac{λ}{2} \)
D. \(L = \frac{λ}{4} \)
Answer» D. \(L = \frac{λ}{4} \)
1257.

Which of the following is the condition for the Log periodic antenna to be inactive stop region?

A. \(L=\frac{λ}{2} \)
B. \(L > \frac{λ}{2} \)
C. \(L < \frac{λ}{2} \)
D. \(L = \frac{λ}{4} \)
Answer» C. \(L < \frac{λ}{2} \)
1258.

Which of the following is the condition for the Log periodic antenna to be in active region?

A. \(L = \frac{λ}{2} \)
B. \(L > \frac{λ}{2} \)
C. \(L < \frac{λ}{2} \)
D. \(L = \frac{λ}{4} \)
Answer» B. \(L > \frac{λ}{2} \)
1259.

The __________ argument contains the message to display inside the dialog box.

A. defaultResponse
B. prompt
C. title
D. message
Answer» C. title
1260.

The value returned by the Inputbox depends on the __________ the user chooses.

A. Button
B. Message
C. Property
D. Return type
Answer» B. Message
1261.

The InputBox functions prompt argument should be entered using __________

A. Book title capitalization
B. Sentence capitalization
C. Text capitalization
D. Post capitalization
Answer» C. Text capitalization
1262.

__________ is an underscore that is immediately preceded by a space and is located at the end of the physical line of code.

A. Underscore
B. Hyphen
C. Line continuation character
D. Line termination character
Answer» D. Line termination character
1263.

__________ displays an input dialog box containing a message, Ok and Cancel button and an input area.

A. Inputbox function
B. Inbox function
C. Dialogbox function
D. In function
Answer» B. Inbox function
1264.

__________ in the syntax gives the format you want to use.

A. formatString
B. format
C. numericVariableName
D. toString
Answer» B. format
1265.

The toString method formats the number stored in the numeric value and then returns the result as a __________

A. Integer
B. Double
C. Character
D. String
Answer» E.
1266.

__________ function is used to format numbers.

A. toString
B. toNumber
C. toFormat
D. toSpecify
Answer» B. toNumber
1267.

Specifying the number of decimal places and special characters to display in a number is called as __________

A. Including
B. Formatting
C. Emphasizing
D. Promoting
Answer» C. Emphasizing
1268.

The __________ is used to concat to Strings.

A. Concatenation operator
B. + symbol
C. Concat function
D. Cat function
Answer» B. + symbol
1269.

The commercial method which combines the effect of vibration with jetting is known as _______

A. Flooding
B. Ramming
C. Vibration
D. Vibroflotation
Answer» E.
1270.

Identify the given Sheet pile below.

A. Arch web sheet pile
B. R.C.C. sheet pile
C. Straight web sheet pile
D. Timber sheet pile
Answer» E.
1271.

Identify the given pile below.

A. Steep pile
B. Sand pile
C. Sheet pile
D. Timber pile
Answer» C. Sheet pile
1272.

Stone columns are invariably used in which soil.

A. Poor bearing capacity
B. Strong bearing capacity
C. Low bearing capacity
D. Very poor bearing capacity
Answer» B. Strong bearing capacity
1273.

Materials having high thermal conductivity are difficult to melt.

A. True
B. False
Answer» B. False
1274.

In fusion welding, welded pieces are kept together under pressure.

A. True
B. False
Answer» C.
1275.

With an increase in the heat input of arc welding method, how does it affect the required current?

A. Increases
B. Decreases
C. Remains same
D. No relation
Answer» B. Decreases
1276.

What does HAZ stand for?

A. Helium Aerated Zone
B. Heated Area Zone
C. Heat Affected Zone
D. Heat Allowed Zone
Answer» D. Heat Allowed Zone
1277.

Which of the following is not included in weldability?

A. Ability of mechanical soundness
B. Serviceability of joint
C. Strain relieving brittleness
D. Metallurgical compatibility of metal
Answer» D. Metallurgical compatibility of metal
1278.

The inner frame within a top-level window can be referred to as _____________

A. parent(parent)
B. parent.parent
C. parent*parent
D. parent/parent
Answer» C. parent*parent
1279.

When will the fourth argument to open() useful?

A. When the second argument names a retired window
B. When the first argument names an existing window
C. When the second argument names an existing window
D. When the first argument names a retired window
Answer» D. When the first argument names a retired window
1280.

What will happen if the first argument of open() is omitted?

A. Error Page
B. Remains in the same page
C. about:blank
D. Reloads the page
Answer» C. about:blank
1281.

How are windows, tabs, iframes, and frames treated according to javascript?

A. They are all browsing contexts
B. They are all browsing information
C. They are all Window contexts
D. They are all Window objects
Answer» E.
1282.

Each tab in the single web browser window is called as ____________

A. Browser Information
B. Browsing context
C. Both Browser Information & Browsing context
D. Browser Log
Answer» C. Both Browser Information & Browsing context
1283.

Find the disadvantage in the following circuit diagram:

A. Voltage get attenuated by R1
B. Voltage get attenuated by R2
C. Voltage get attenuated by R1 and R2
D. Voltage shift get increased by the drop across R1 and R2
Answer» C. Voltage get attenuated by R1 and R2
1284.

Limitation of an output stage amplifier, if it emitter follower with complementary transistor

A. Cross-over distortion
B. Low impedance output
C. Shift in level
D. Active load current
Answer» B. Low impedance output
1285.

What is the need for level shifter in operational amplifier?

A. Level the quiescent voltage
B. Remove distortion at output
C. Limits the output voltage
D. Increase the quiescent voltage
Answer» D. Increase the quiescent voltage
1286.

Load resistors (Re) is neglected for maximizing the voltage gain in amplifier because,

A. Requires large chip are
B. Requires large power supply
C. Quiescent drop across Re increases
D. All of the mentioned
E. is neglected for maximizing the voltage gain in amplifier because,a) Requires large chip areb) Requires large power supplyc) Quiescent drop across Re increasesd) All of the mentioned
Answer» E. is neglected for maximizing the voltage gain in amplifier because,a) Requires large chip areb) Requires large power supplyc) Quiescent drop across Re increasesd) All of the mentioned
1287.

Calculate the VI – VO for the level shifter shown in the figure (Assume identical silicon transistor and very large value of β). Transistor QA and QB form current mirror.

A. 5.56V
B. 6.00v
C. 7.98v
D. 6.65v
Answer» E.
1288.

The input voltage of a difference amplifier are 2.5v and 4.9v. If the transconductance is 0.065Ω-1, determine the load current entering the next stage

A. 0.156A
B. 1.56A
C. 0.156mA
D. 15.6µA
Answer» B. 1.56A
1289.

In the circuit shown, find the overall current gain?

A. 456218
B. 444878
C. 444210
D. 455734
Answer» C. 444210
1290.

In Darlington pair differential amplifier the current gain is given as 100. Where IB1=5µA and IC1=0.35mA. Determine IC2

A. 0.5mA
B. 1.5mA
C. 2mA
D. 0.15mA
Answer» E.
1291.

To increase the input resistance, the differential amplifier replaces transistor by

A. Current mirror
B. Current repeater
C. Darlington pair
D. All of the mentioned
Answer» D. All of the mentioned
1292.

Convert 10 micron to meters.

A. 10-5m
B. 107m
C. 10-6m
D. 10-4m
Answer» B. 107m
1293.

Which of the following doesn’t defines for the junction which is depleted of mobile charges?

A. Depletion region
B. Uncovered region
C. Space charge region
D. Transition region
Answer» C. Space charge region
1294.

The un-neutralised ions in the neighbourhood of the junction are known as

A. Depletion charges
B. Uncovered charges
C. Mobile ions
D. Counter ions
Answer» C. Mobile ions
1295.

Which of the following options doesn’t defined for the necessity for the existence of the potential barrier?

A. Contact
B. Potential
C. Diffusion
D. Fermi dirac
Answer» E.
1296.

The displacement of the charges results in

A. Magnetic field
B. Electric field
C. Rust
D. Hall effect
Answer» C. Rust
1297.

The donor ions is represented by a positive plus sign. Is it True or False?

A. True
B. False
Answer» B. False
1298.

Which of the following is not a DSP core?

A. Motorola DSP56300
B. TI TMS320/C54x
C. Motorola 56300
D. STEL-2000
Answer» E.
1299.

Programmable DSP are suitable for front-end filtering.

A. True
B. False
Answer» C.
1300.

Which of the following is not a programmable INFOSEC module?

A. KY series
B. KG84
C. CYPRIS
D. VME
Answer» B. KG84