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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 26601. |
The buck-boost regulator is also a. A step-down regulator b. A step-up regulator c. An inverting regulator d. All of the above |
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Answer» (d) All of the above |
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| 26602. |
The zener current in a zener follower is a. Equal to the output current b. Smaller than the output current c. Larger than the output current d. Prone to thermal runaway |
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Answer» (b) Smaller than the output current |
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| 26603. |
For a class B push-pull emitter follower to work properly, the emitter diodes must a. Be able to control the quiescent current b. Have a power rating greater than the output power c. Have a voltage gain of I d. Match the compensating diodes |
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Answer» (d) Match the compensating diodes |
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| 26604. |
In the two-transistor voltage regulator, the output voltage a. Is regulated b. Has much smaller ripple than the input voltage c. Is larger than the zener voltage d. All of the above |
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Answer» (d) All of the above |
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| 26605. |
Simple current limiting produces too much heat in the a. Zener diode b. Load resistor c. Pass transistor d. Ambient air |
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Answer» (c) Pass transistor |
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| 26606. |
The efficiency of a linear regulator is high when the a. Headroom voltage is low b. Pass transistor has a high power dissipation c. Zener voltage is low d. Output voltage is low |
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Answer» (a) Headroom voltage is low |
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| 26607. |
With foldback current limiting, the load voltage approaches zero, and the load current approaches a. A small value b. Infinity c. The zener current d. A destructive level |
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Answer» (a) A small value |
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| 26608. |
A photodiode is normally a. Forward-biased b. Reverse-biased c. Neither forward- nor reverse-biased d. Emitting light |
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Answer» (b) Reverse-biased |
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| 26609. |
A capacitor may be needed in a discrete voltage regulator to prevent a. Negative feedback b. Excessive load current c. Oscillations d. Current sensing |
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Answer» (c) Oscillations |
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| 26610. |
If the output of a voltage regulator varies from 20 to 19.8 V when the line voltage varies over its specified range, the source regulation is a. 0 b. 1% c. 2% d. 5% |
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Answer» The answer is: (b) 1% |
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| 26611. |
The efficiency of a voltage regulator is high when a. Input power is low b. Output power is high c. Little power is wasted d. Input power is high |
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Answer» (c) Little power is wasted |
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| 26612. |
A shunt regulator is inefficient because a. It wastes power b. It uses a series resistor and a shunt transistor c. The ratio of output to input power is low d. All of the above |
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Answer» (d) All of the above |
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| 26613. |
An advantage of shunt regulation is a. Built-in short-circuit protection b. Low power dissipation in the pass transistor c. High efficiency d. Little wasted power |
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Answer» (a) Built-in short-circuit protection |
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| 26614. |
If the output of a voltage regulator varies from 15 to 14.7 V between the minimum and maximum load current, the load regulation is a. 0 b. 1% c. 2% d. 5% |
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Answer» The answer is: (c) 2% |
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| 26615. |
When the light increases, the reverse minority carrier current in a photodiodea. Decreases b. Increases c. Is unaffected d. Reverses direction |
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Answer» (b) Increases |
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| 26616. |
If the load is shorted, the pass transistor has the least power dissipation when the regulator has a. Foldback limiting b. Low efficiency c. Buck topology d. A high zener voltage |
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Answer» (a) Foldback limiting |
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| 26617. |
The input current to a shunt regulator is a. Variable b. Constant c. Equal to load current d. Used to store energy in a magnetic field |
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Answer» The answer is: (b) Constant |
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| 26618. |
A power supply with low output impedance has low a. Load regulation b. Current limiting c. Line regulation d. Efficiency |
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Answer» (a) Load regulation |
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| 26619. |
The regulator with the highest efficiency is the a. Shunt regulator b. Series regulator c. Switching regulator d. Dc-to-dc converter |
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Answer» (c) Switching regulator |
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| 26620. |
A Shockley diode is the same as a a. four-layer diode b. SCR c. diac d. triac |
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Answer» The correct answer is: (a) four-layer diode |
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| 26621. |
A silicon controlled rectifier has a. Two external leads b. Three external leads c. Four external leads d. Three doped regions |
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Answer» (b) Three external leads |
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| 26622. |
What is the minimum and maximum length of the header in the TCP segment and IP datagram? |
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Answer» The header should have a minimum length of 20 bytes and can have a maximum length of 60 bytes. |
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| 26623. |
The only way to stop a four-layer diode that is conducting is by a. A positive trigger b. Low-current drop out c. Breakover d. Reverse-bias triggering |
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Answer» (b) Low-current drop out |
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| 26624. |
The minimum input current that can turn on a thyristor is called the a. Holding current b. Trigger current c. Breakover current d. Low-current drop out |
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Answer» (b) Trigger current |
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| 26625. |
The usual way to protect a load from excessive supply voltage is with a a. Crowbar b. Zener diode c. Four-layer diode d. Thyristor |
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Answer» The Correct answer is: (a) Crowbar |
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| 26626. |
A SCR is usually turned on by a. Breakover b. A gate trigger c. Breakdown d. Holding current |
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Answer» (b) A gate trigger |
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| 26627. |
The minimum anode current that keeps a thyristor turned on is called the a. Holding current b. Trigger current c. Breakover current d. Low-current drop out |
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Answer» (a) Holding current |
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| 26628. |
When a crowbar is used with a power supply, the supply needs to have a fuse or a. Adequate trigger current b. Holding current c. Filtering d. Current limiting |
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Answer» (d) Current limiting |
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| 26629. |
An RC snubber protects an SCR against a. Supply overvoltages b. False triggering c. Breakover d. Crowbarring |
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Answer» (b) False triggering |
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| 26630. |
When a diode is forward-biased, the recombination of free electrons and holes may produce a. Heat b. Light c. Radiation d. All of the above |
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Answer» (d) All of the above |
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| 26631. |
When the graph of current versus voltage is a straight line, the device is referred to as a. Active b. Linear c. Nonlinear d. Passive |
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Answer» The correct answer is: (b) Linear |
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| 26632. |
What is the range of addresses in the classes of internet addresses? |
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Answer» Class A - 0.0.0.0 - 127.255.255.255 Class B - 128.0.0.0 - 191.255.255.255 Class C - 192.0.0.0 - 223.255.255.255 Class D - 224.0.0.0 - 239.255.255.255 Class E - 240.0.0.0 - 247.255.255.255 |
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| 26633. |
Write the expression for magnitude of the stress. |
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Answer» Magnitude of stress = F/A |
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| 26634. |
What is plastic substance? |
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Answer» Substance which does not regain its original size and shape when the deforming force is removed is called plastic substance |
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| 26635. |
What is the difference between TFTP and FTP application layer protocols? |
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Answer» The Trivial File Transfer Protocol (TFTP) allows a local host to obtain files from a remote host but does not provide reliability or security. It uses the fundamental packet delivery services offered by UDP. The File Transfer Protocol (FTP) is the standard mechanism provided by TCP / IP for copying a file from one host to another. It uses the services offer by TCP and so is reliable and secure. It establishes two connections (virtual circuits) between the hosts, one for data transfer and another for control information. |
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| 26636. |
Define stress.. |
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Answer» The restoring force per unit area of the body is called stress |
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| 26637. |
What are major types of networks and explain? |
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Answer» 1. Server-based network: provide centralized control of network resources and rely on server computers to provide security and network administration 2. Peer-to-peer network: computers can act as both servers sharing resources and as clients using the resources. |
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| 26638. |
Give one example for plastic substance. |
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Answer» Ex-Putty (mud) |
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| 26639. |
Explain 5-4-3 rule? |
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Answer» In a Ethernet network, between any two points on the network ,there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated. |
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| 26640. |
What are the important topologies for networks? |
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Answer» 1. BUS topology: In this each computer is directly connected to primary network cable in a single line. Advantages: Inexpensive, easy to install, simple to understand, easy to extend. 2. STAR topology: In this all computers are connected using a central hub. Advantages: Can be inexpensive, easy to install and reconfigure and easy to trouble shoot physical problems. 3. RING topology: In this all computers are connected in loop. Advantages: All computers have equal access to network media, installation can be simple, and signal does not degrade as much as in other topologies because each computer regenerates it. |
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| 26641. |
What is difference between baseband and broadband transmission? |
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Answer» In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal. In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously. |
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| 26642. |
What is mesh network? |
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Answer» A network in which there are multiple network links between computers to provide multiple paths for data to travel. |
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| 26643. |
Elasticity is an internal property of a matter. Is it true or false? |
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Answer» Elasticity is an internal property of a matter is true. |
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| 26644. |
What is the cause of the elasticity? |
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Answer» It is due to intermolecular forces between the molecules of the material |
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| 26645. |
Why entrepreneur need to have patience and positivity in his /her attitude? |
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Answer» Patience- Entrepreneurship is not a one-day job. Success may not be achieved quickly. Positivity- An entrepreneur has to think positively even when he/she takes a big risk. There may be losses at times but even then an entrepreneur should stay positive and continue to work hard towards their goal. |
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| 26646. |
What do you mean by deforestation? State one disadvantage of deforestation. |
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Answer» Deforestation is the clearance of a forest or stand of trees where the land is converted to a non forest use, such as agriculture and construction of houses. It results in loss of habitat for many plants and animals living in the forest. It may also lead to extinction of plant and animal species. |
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| 26647. |
If L, C and R are the self inductance, capacitance and resistance respectively, which of the following does not have the dimension of time ?(A) RC(B) L/R(C) √LC(D) L/C |
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Answer» Correct option is (D) L/C (L/C) does not have dimension of time. RC, L/R are time constant while √LC is reciprocal of angular frequency or having dimension of time. |
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| 26648. |
Give IUPAC name of following compound A. 5-Ethylidene-7-methylene oct-1-yneB. 5-Ethylidene-7-methyl oct -7-en -1-yneC. 4-Ethylidene-2-methyl oct -1-en -7 -yneD. 4-Ethenyl -2-methyl oct -1-en-7 -yne |
| Answer» Correct Answer - C | |
| 26649. |
There role is of supervising and checking on the preparation and presentation at any social gathering. These are known as a. Entrepreneur b. Event manager c. Concierge d. Stewards |
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Answer» Correct answer is b. Event manager |
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| 26650. |
Write I.U.P.A.C. name of following compound A. 5,6-dioxo-6-(N-Ethyl -N-Methyl-amino)-2,3-epoxy hexanoic acid.B. 6-(N-Ethyl-N-methyl amino)-2,3-epoxy-5,6-dioxo,hexanoic acidC. 5-(N-Ethyl-N-methyl carbomoyl)-2,3-epoxy-5-oxo Pentanoic acidD. 5-(N-Ethyl -N-methyl carbamoyl)-1,2-epoxy-4-oxo Butanoic carboxylic acid |
| Answer» Correct Answer - C | |