MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
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.
| 301. |
In the equation, 20cos(108 t + 3 sin109 t) the modulation index is ________ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 302. |
What is the frequency of audio modulation? |
| A. | 10 Hz |
| B. | 20 KHz |
| C. | 30 KHz |
| D. | 40 KHz |
| Answer» C. 30 KHz | |
| 303. |
Which device is has more chance to be found in SSB transmitter? |
| A. | balanced modulator |
| B. | class A RF amplifier |
| C. | class C audio amplifier |
| D. | class B RF amplifier |
| Answer» B. class A RF amplifier | |
| 304. |
If we are given F value and R value, which is the only one variable we cannot determine by this information? |
| A. | Value of P |
| B. | Temperature of inlet and outlet of shell |
| C. | Temperature of inlet and outlet of tube |
| D. | Temperature of inlet and outlet of shell and tube |
| Answer» E. | |
| 305. |
What are the axes of the F-curve? |
| A. | X – Correction Factor, Y – R |
| B. | X – Correction Factor, Y – mean of P and R |
| C. | Y – Correction Factor, X – R |
| D. | Y – Correction Factor, X – P |
| Answer» E. | |
| 306. |
In a shell and tube heat exchanger, in the inner side fluid enters at 15℃ and leaves at 65℃. The shell has oil entering at 105℃ and leaving at 85℃. What is the value of correction factor F? |
| A. | 0.94 |
| B. | 0.96 |
| C. | 0.99 |
| D. | 0.91 |
| Answer» B. 0.96 | |
| 307. |
In a shell and tube heat exchanger, in the inner side fluid enters at 15℃ and leaves at 65℃. The shell has oil entering at 105℃ and leaving at 85℃. What is the value of correction factor coefficients R and P? |
| A. | R = 0.4, P = 0.55 |
| B. | R = 0.3, P = 0.55 |
| C. | R = 0.4, P = 0.66 |
| D. | R = 0.3, P = 0.66 |
| Answer» B. R = 0.3, P = 0.55 | |
| 308. |
Which one of the following are correct relation of R and P?(T/t =shell/tube, 1⁄2 = inlet/outlet) |
| A. | R = \(\frac{T_2-T_1}{t_2-t_1}\), P = \(\frac{t_2-t_1}{T_2-T_2}\) |
| B. | R = \(\frac{T_2-T_1}{t_2- t_1}\), P = \(\frac{t_2- t_1}{T_1- t_1}\) |
| C. | R = \(\frac{T_2-T_1}{t_2- t_1}\), P = \(\frac{t_2- t_1}{T_2- T_1}\) |
| D. | R = \(\frac{T_1-T_2}{t_2- t_1}\), P = \(\frac{t_2- t_1}{T_1- t_1}\) |
| Answer» E. | |
| 309. |
In a shell and tube heat exchanger, in the inner side fluid enters at 15℃ and leaves at 65℃. The shell has steam at 1atm. What is the value of corrected LMTD and correction factor? |
| A. | 39℃, F = 0 |
| B. | 56.35℃, F = 0 |
| C. | 70℃, F = 1 |
| D. | 56.35℃, F = 1 |
| Answer» E. | |
| 310. |
The value of correction factor can be equal to 1 in most cases of operation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 311. |
What is the value of Correction Factor?Find the value from the below F-curve chart where R = 2, P = 0.3. |
| A. | 0.86 |
| B. | 0.90 |
| C. | 0.80 |
| D. | 0.82 |
| Answer» B. 0.90 | |
| 312. |
Why do we use LMTD Correction factor? |
| A. | Incomplete Countercurrent flow |
| B. | Leakage leading to heat loss |
| C. | Counter current and Co-current at parts |
| D. | Due to fouling |
| Answer» D. Due to fouling | |
| 313. |
What should be the minimum value of LMTD Correction Factor F for steady state operation of the equipment? |
| A. | <0.5 |
| B. | <1 |
| C. | 1 > F > 0.75 |
| D. | 1 > F > 0.5 |
| Answer» D. 1 > F > 0.5 | |
| 314. |
Which of the following has the Log mean temperature difference is used for corrected LMTD for a Shell and tube Heat Exchanger? |
| A. | Counter-flow |
| B. | Parallel Flow |
| C. | Cross Flow |
| D. | Split Flow |
| Answer» B. Parallel Flow | |
| 315. |
What should be the minimum value of the Correction Factor to get multiplied to LMTD? |
| A. | >1 |
| B. | <2 |
| C. | <1 |
| D. | >2 |
| Answer» D. >2 | |
| 316. |
When using ΔTLM for a shell and tube heat exchanger, we cannot use the conventional formula for LMTD. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 317. |
The coefficient of permeability of the two soil layers 1 and 2 in soil deposit is 9*10-7 cm/s and 4*10-7 cm/s respectively. The thickness of the layers is equal. The value of average permeability perpendicular to bedding planes is ________ |
| A. | 4.5*10-7 cm/s |
| B. | 5.5*10-7 cm/s |
| C. | 6.5*10-7 cm/s |
| D. | 7.5*10-7 cm/s |
| Answer» C. 6.5*10-7 cm/s | |
| 318. |
The coefficient of permeability of the two soil layers 1 and 2 in soil deposit is 9*10-7 cm/s and 4*10-7 cm/s respectively. The thickness of the layers is equal. The value of average permeability parallel to bedding planes is ________ |
| A. | 4.5*10-7 cm/s |
| B. | 5.5*10-7 cm/s |
| C. | 6.5*10-7 cm/s |
| D. | 7.5*10-7 cm/s |
| Answer» D. 7.5*10-7 cm/s | |
| 319. |
What will be its average permeability perpendicular to the bedding plane if a soil deposit has three layers of soil? The permeability of the second layer is 1/2 that of the first layer and the permeability of the third layer is 1/3 that of the first layer. The thickness of each layer is equal. |
| A. | k |
| B. | 1/2k |
| C. | 1/3k |
| D. | 1/4k |
| Answer» C. 1/3k | |
| 320. |
A soil deposit has three layers of soil. The permeability of the second layer is 1/2 that of the first layer and the permeability of the third layer is 1/3 that of the first layer. The thickness of each layer is equal. What will be its average permeability parallel to the bedding plane? |
| A. | 11k |
| B. | 18k |
| C. | \(\frac{11}{18}k\) |
| D. | \(\frac{18}{11}k\) |
| Answer» D. \(\frac{18}{11}k\) | |
| 321. |
What will be its average permeability perpendicular to the bedding plane if a soil deposit has three layers of soil? The permeability of the second layer is twice that of the first layer and the permeability of the third layer is thrice that of the first layer. The thickness of each layer is 5m. |
| A. | 11k |
| B. | 18k |
| C. | \(\frac{11}{18}k\) |
| D. | \(\frac{18}{11}k\) |
| Answer» E. | |
| 322. |
A soil deposit has three layers of soil. The permeability of the second layer is twice that of the first layer and the permeability of the third layer is thrice that of the first layer. The thickness of each layer is 5m. What will be its average permeability parallel to the bedding plane? |
| A. | k |
| B. | 2k |
| C. | 3k |
| D. | 4k |
| Answer» C. 3k | |
| 323. |
The average permeability perpendicular to the bedding planes is given by________ |
| A. | \(k = \frac{k_1 z_1+k_2 z_2+⋯.+k_n z_n}{z}*\frac{1}{2} \) |
| B. | \(k = \frac{1}{\frac{z_1}{k_1} +\frac{z_2}{k_2} +⋯+\frac{z_n}{k_n}} \) |
| C. | \(k = \frac{z}{\frac{z_1}{k_1} +\frac{z_2}{k_2} +⋯+\frac{z_n}{k_n}} \) |
| D. | \(k = \frac{k_1 z_1+k_2 z_2+⋯.+k_n z_n}{z} \) |
| Answer» D. \(k = \frac{k_1 z_1+k_2 z_2+⋯.+k_n z_n}{z} \) | |
| 324. |
The average permeability parallel to the bedding planes is given by________ |
| A. | \(k = \frac{k_1 z_1+k_2 z_2+⋯.+k_n z_n}{z}*\frac{1}{2} \) |
| B. | \(k = \frac{1}{\frac{z_1}{k_1} +\frac{z_2}{k_2} +⋯+\frac{z_n}{k_n}} \) |
| C. | \(k = \frac{z}{\frac{z_1}{k_1} +\frac{z_2}{k_2} +⋯+\frac{z_n}{k_n}} \) |
| D. | \(k = \frac{k_1 z_1+k_2 z_2+⋯.+k_n z_n}{z} \) |
| Answer» E. | |
| 325. |
The average coefficient of permeability of whole deposit will depend upon _________ |
| A. | direction of flow with respect to bedding plane |
| B. | direction of flow but not with respect to the bedding plane |
| C. | length of the bedding plane |
| D. | width of the bedding plane |
| Answer» B. direction of flow but not with respect to the bedding plane | |
| 326. |
Each layer of stratified soil deposit has its own coefficient of permeability. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 327. |
IKE is abbreviated as Internet Key Exchange. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 328. |
________ is the entity for issuing digital certificates.a) Certificate Authority (CA)b) Cert Authority (CA)c) Cert Authorization (CA)d) Certificate Authorization (C |
| A. | Certificate Authority (CA) |
| B. | Cert Authority (CA) |
| C. | Cert Authorization (CA) |
| D. | Certificate Authorization (CA) |
| Answer» B. Cert Authority (CA) | |
| 329. |
Authentication in PCT requires _____ keys. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 330. |
Gas turbine is shut down by ____________ |
| A. | Turning off starter |
| B. | Stopping the compressor |
| C. | Fuel is cut off from the combustor |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 331. |
Which of the following is (are) used as starter for a gas turbine? |
| A. | An Internal combustion engine |
| B. | A steam turbine |
| C. | An auxiliary electric motor |
| D. | All of the mentioned |
| E. | used as starter for a gas turbine?a) An Internal combustion engineb) A steam turbinec) An auxiliary electric motord) All of the mentioned |
| Answer» E. used as starter for a gas turbine?a) An Internal combustion engineb) A steam turbinec) An auxiliary electric motord) All of the mentioned | |
| 332. |
Which of the following method(s) can be used to improve the thermal efficiency of open cycle gas turbine plant? |
| A. | Inter-cooling |
| B. | Reheating |
| C. | Regeneration |
| D. | All of the mentioned |
| Answer» E. | |
| 333. |
What is the percentage of total energy input appearing as network output of the cycle? |
| A. | Thermal efficiency |
| B. | Combustion efficiency |
| C. | Engine efficiency |
| D. | Compression efficiency |
| Answer» B. Combustion efficiency | |
| 334. |
The ratio of heat actually released by 1kg of fuel to heat that would be released by complete perfect combustion is called ___________ |
| A. | Thermal efficiency |
| B. | Combustion efficiency |
| C. | Engine efficiency |
| D. | Compression efficiency |
| Answer» C. Engine efficiency | |
| 335. |
Which of the following is (are) the limitation(s) of gas turbines? |
| A. | They are not self-starting |
| B. | Higher rotor speeds |
| C. | Low efficiencies at part loads |
| D. | All of the mentioned |
| E. | the limitation(s) of gas turbines?a) They are not self-startingb) Higher rotor speedsc) Low efficiencies at part loadsd) All of the mentioned |
| Answer» E. the limitation(s) of gas turbines?a) They are not self-startingb) Higher rotor speedsc) Low efficiencies at part loadsd) All of the mentioned | |
| 336. |
What are the major field(s) of application of gas turbine? |
| A. | Aviation |
| B. | Oil and gas industry |
| C. | Marine propulsion |
| D. | All of the mentioned |
| Answer» E. | |
| 337. |
The compressor has to be started _____________ |
| A. | Before starting the gas turbine |
| B. | After starting the gas turbine |
| C. | Simultaneously with starting of gas turbine |
| D. | At any time during the operation |
| Answer» B. After starting the gas turbine | |
| 338. |
The heating value of gaseous fuels is about _____________ |
| A. | 500 kJ/litre |
| B. | 30 kJ/litre |
| C. | 100 kJ/litre |
| D. | 10 kJ/litre |
| Answer» C. 100 kJ/litre | |
| 339. |
zip and unzip can perform each and every function that is performed by gzip, gunzip and tar. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 340. |
Which option is used with unzip command to view the contents of a compressed archive? |
| A. | -v |
| B. | -t |
| C. | -c |
| D. | -x |
| Answer» B. -t | |
| 341. |
If the uncompressed file already exists on disk, unzip asks for the user confirmation whether to replace the existing file or not. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 342. |
Which command is used for unzipping files which are compressed using zip command? |
| A. | gunzip |
| B. | gzip |
| C. | unzip |
| D. | guzip |
| Answer» D. guzip | |
| 343. |
For recursive compression, zip uses -r option. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 344. |
To create an archive named abc.tar consisting of two files, file01 and file02, which of the following command will be used? |
| A. | tar -cvf abc.tar file01 file02 |
| B. | tar -cvf file01 file02 abc.tar |
| C. | tar -cv abc.tar file01 file02 |
| D. | tar -c abc.tar file01 file02 |
| Answer» C. tar -cv abc.tar file01 file02 | |
| 345. |
Which of the following key options is used with tar to create an archive? |
| A. | -c |
| B. | -x |
| C. | -t |
| D. | -f archive name |
| Answer» B. -x | |
| 346. |
Which of the following range represents the quality factor of Owens Bridge? |
| A. | Less than 1 |
| B. | 1 to 10 |
| C. | Very high |
| D. | Negligible |
| Answer» D. Negligible | |
| 347. |
What is the advantage of Owens Bridge over other AC bridges? |
| A. | High quality factor |
| B. | Can measure inductance over wide range |
| C. | Both high Q factor and wide range operation |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 348. |
What will you call an impedance with a zero phase angle? |
| A. | Resistance |
| B. | Reactance |
| C. | Impedance itself |
| D. | Zero impedance |
| Answer» B. Reactance | |
| 349. |
Measurement of impedance involves calculating ______________ |
| A. | Resistive component of impedance |
| B. | Reactive component of impedance |
| C. | Both resistive and reactive component of impedance |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 350. |
Airbrakes are used to increase __________ |
| A. | Lift |
| B. | Drag |
| C. | Pitch |
| D. | Thrust |
| Answer» C. Pitch | |