Explore topic-wise MCQs in Php.

This section includes 2095 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.

201.

Which of the following component movement interrupts the electrical supply by disconnecting the breaker points?

A. Float chamber
B. Diaphragm
C. Strainer
D. Armature
Answer» E.
202.

Which system experiences Vapour locking in the fuel system?

A. A.C mechanical pump
B. S U electrical pump
C. Both A.C mechanical pump and S U electrical pump
D. Electrical pump
Answer» B. S U electrical pump
203.

Which valve opens when the downward movement of the diaphragm causes a vacuum in the chamber?

A. Outlet
B. Inlet
C. Both outlet and inlet
D. Transfer
Answer» C. Both outlet and inlet
204.

Which of the following is the correct sequence of fuel travel?

A. Tank – fuel pump – fuel filter – carburetor
B. Tank – fuel filter – fuel pump – carburetor
C. Fuel filter – fuel pump – tank – carburetor
D. Carburetor – fuel pump – fuel filter – tank
Answer» B. Tank – fuel filter – fuel pump – carburetor
205.

Which type of energy is used to operate the diaphragm in an S U electrical pump?

A. Mechanical
B. Hydraulic
C. Electrical
D. Solar
Answer» D. Solar
206.

Which material is used in the diaphragm of an A.C mechanical pump?.

A. Paper
B. Metal sheet
C. High-grade cotton and rubber
D. Ceramic
Answer» D. Ceramic
207.

Which of the following helps in the relief of the excess pressure which is built up?

A. Pull rod
B. Diaphragm return spring
C. Camshaft
D. Suction valve
Answer» C. Camshaft
208.

Which of the following provides the force to drive the pump?

A. Crankshaft
B. Differential
C. Camshaft
D. V-belt
Answer» D. V-belt
209.

What is the pressure range in kPa in the petrol pipeline between the fuel pump and the carburetor?

A. 5-10
B. 10-20
C. 20-35
D. 35-40
Answer» D. 35-40
210.

Which material is used for the valves of the A.C mechanical pump?

A. Cast iron
B. Plastic
C. Bakelite
D. Paper
Answer» D. Paper
211.

The typical squelch circuit cuts off __________

A. An audio amplifier when the carrier is absent
B. RF interference when the signal is weak
C. An IF amplifier when Automatic Gain Control is maximum
D. An IF amplifier when Automatic Gain Control is minimum
Answer» B. RF interference when the signal is weak
212.

Frequency components of an AM wave are?

A. Carrier frequency (ωc) with amplitude A
B. Lower side band (ωc + ωm) having amplitude mA⁄4c) Upper side band (ωc – ωm) having amplitude mA⁄4d) Carrier frequency (ω
C. with amplitude Ab) Lower side band (ωc + ωm) having amplitude mA⁄4c) Upper side band (ωc – ωm) having amplitude mA⁄4
D. Carrier frequency (ωc) with amplitude A⁄2
Answer» B. Lower side band (ωc + ωm) having amplitude mA⁄4c) Upper side band (ωc – ωm) having amplitude mA⁄4d) Carrier frequency (ω
213.

The IF bandwidth of a radar receiver is inversely proportional to the __________

A. pulse repetition frequency
B. pulse width
C. pulse amplitude
D. pulse code
Answer» C. pulse amplitude
214.

What is the advantage of using direct current in magnetic particle inspection?

A. Battery maintenance
B. Demagnetize easy
C. Variable voltage supply
D. Subsurface detection
Answer» E.
215.

The minimum width of crack, which can be inspected by magnetic particle inspection is _________

A. 1nm
B. 1µm
C. 10µm
D. 1mm
Answer» C. 10µm
216.

What is Curie point for most of the ferrous magnetic materials?

A. 550˚C
B. 760˚C
C. 910˚C
D. 1133˚C
Answer» C. 910˚C
217.

Which of the following material can’t be tested by magnetic particle testing?

A. Co
B. Fe
C. Ni
D. Mg
Answer» E.
218.

Which of the following material can be tested by magnetic particle testing?

A. Diamagnetic
B. Non-magnetic
C. Paramagnetic
D. Ferromagnetic
Answer» E.
219.

___________ increases the visibility of the flaw in liquid penetrant inspection.

A. Developer
B. Penetrant
C. Benzene
D. Spirit
Answer» B. Penetrant
220.

Which is the correct order for the liquid penetrant test?

A. Penetrant apply, development, inspection, surface preparation
B. Surface preparation, penetrant apply, development, inspection
C. Penetrant apply, development, surface preparation, inspection
D. Development, surface preparation, penetrant apply, inspection
Answer» C. Penetrant apply, development, surface preparation, inspection
221.

Liquid penetrant test can’t be used on _________ specimen.

A. Large
B. Simple
C. Complex
D. Internally defected
Answer» E.
222.

What is the disadvantage of the liquid penetrant test?

A. Expensive
B. Slow
C. Not reliable
D. Depth restriction
Answer» E.
223.

Is additional term can be added to make an aircraft wing station?

A. True
B. False
Answer» B. False
224.

Is local induced change the angle of attack on a given section of a wing?

A. True
B. False
Answer» B. False
225.

Is prandtl lifting line theory predicts lift distribution over a three dimensional wing?

A. True
B. False
Answer» B. False
226.

_______ aids in cushioning the shock of the hydraulic pressure during the working of the hydraulic ram

A. Pressure vessel
B. air bags
C. inlet valve
D. Drive pipe
Answer» B. air bags
227.

The typical efficiency of a hydraulic ram is ____

A. 50%
B. 60%
C. 70%
D. 80%
Answer» C. 70%
228.

Hydraulic Ram is used in areas where there is a source of ________ power.

A. Thermal
B. Hydroelectric
C. Biogas
D. Solar
Answer» C. Biogas
229.

A hydraulic ram uses the _______ effect to develop pressure.

A. Water hammer
B. Pascal’s law
C. Bernouille’s
D. Toricelli’s
Answer» B. Pascal’s law
230.

A ________ is a cyclic water pump that derives its power from hydroelectric sources.

A. Hydraulic crane
B. Hydraulic Ram
C. Hydraulic Accumulator
D. Hydraulic presses
Answer» C. Hydraulic Accumulator
231.

A __________ is a hydraulic machine for converting hydraulic power at low pressure into a reduced volume at higher pressure.

A. Hydraulic Ram
B. Hydraulic crane
C. Hydraulic Intensifier
D. Hydraulic accumulator
Answer» D. Hydraulic accumulator
232.

Aniline reacts with which of these to form Schiff base?

A. Acetic acid
B. Benzaldehyde
C. Acetone
D. NH3
Answer» C. Acetone
233.

Identify the product Z in the following reaction.

A. p-Bromoaniline
B. p -Bromoacetophenone
C. o-Bromoacetophenone
D. o-Bromoacetanilide
Answer» B. p -Bromoacetophenone
234.

p-chloro aniline and anilinium hydrogen chloride can be distinguished by which of the following?

A. Sandmaeyer reaction
B. Carbyl amine reaction
C. Hinsberg’s reaction
D. AgNO3
Answer» E.
235.

Ethyl amine on acetylation gives which of the following?

A. N-ethyl acetamide
B. Acetamide
C. Methyl acetamide
D. Propyl acetamide
Answer» B. Acetamide
236.

In the reaction, what is the compound C6H5N=CHC6H5 is known as?C6H5CHO + C6H5NH2 → C6H5N=HCC6H5 + H2O

A. Aldol
B. Schiffs reagent
C. Schiffs base
D. Benedict reagent
Answer» D. Benedict reagent
237.

The amine which can react with C6H5−SO2−Cl to form a product insoluble in alkali shall be, is which of the following?

A. Primary amine
B. Secondary amine
C. Tertiary amine
D. Both primary and secondary amines
Answer» C. Tertiary amine
238.

A primary amine can be converted to an alcohol by the action of which of the following?

A. Alkali
B. Nitrous acid
C. Reducing agent
D. Oxidizing agent
Answer» C. Reducing agent
239.

The order of the Cascade system doesn’t depend on the output. Which is the property?

A. Commutative
B. Associative
C. Commutative and distributive
D. Distributive
Answer» C. Commutative and distributive
240.

What does the associative property apply?

A. Parallel connection of two systems is equivalent to a single system only in case of a continuous system
B. Series and parallel interconnection of two systems is equivalent to a single system only in case of discrete system
C. Series interconnection of two systems is equivalent to a single system in case of both continuous and discrete system
D. Series interconnection of two systems is equivalent to a single system only in case of discrete
Answer» D. Series interconnection of two systems is equivalent to a single system only in case of discrete
241.

Which is special the property listed below only holds good by an LTI system?

A. Memory
B. Stability
C. Causality
D. Distributive property
Answer» E.
242.

Which of the following person is famous as ‘Blade Runner’?

A. Usain Bolt
B. Milkha Singh
C. Oscar Pistorius
D. Meb Keflezighi
Answer» D. Meb Keflezighi
243.

The region of implants for various parts of an artificial eye can be _________i. Corneaii. Conjectivaiii. Retinaiv. Optic Nervev. Chiasmavi. Lateral geniculate bodyvii. Visual Cortex

A. iii, iv, vi, vii
B. i, iii, v, vi
C. ii, iv, v, vii
D. i, ii
Answer» B. i, iii, v, vi
244.

It is difficult to make an artificial liver so a substitutive technology, like the dialysis machine, is being made. Which of the options is mostly considered in making such machines?

A. Using hepatocytes to filter blood
B. Using semi permeable membrane to filter plasma
C. Using solutions of different organic and inorganic composition, just like dialysate, to filter blood
D. Filtering the organic and inorganic components of the blood separately
Answer» B. Using semi permeable membrane to filter plasma
245.

Calculate the final flux in an inductor having inductance 4000 H, number of turns is 200 and the current changes from 5A to 7A. The initial flux is 760 Wb.

A. 200 Wb
B. 400 Wb
C. 600 Wb
D. 800 Wb
Answer» E.
246.

Calculate the change in flux of an inductor having inductance 4000 H, number of turns is 200 and the current changes from 5A to 7A.

A. 20 Wb
B. 40 Wb
C. 60 Wb
D. 80 Wb
Answer» C. 60 Wb
247.

Calculate the initial current in an inductor having inductance 4000 H, number of turns is 200 and the flux changes from 760 to 800 Wb. Current changes to 7A.

A. 10A
B. 2A
C. 3A
D. 5A
Answer» E.
248.

Calculate the change in current in an inductor having inductance 4000H, number of turns is 200 and the flux changes from 760 to 800 Wb.

A. 2A
B. 4A
C. 6A
D. 8A
Answer» B. 4A
249.

Calculate the number of turns in an inductor with a ferromagnetic core when the inductance is 4000 H, the current changes from 5A to 7A and the flux changes from 760 to 800 Wb.

A. 100
B. 200
C. 300
D. 400
Answer» C. 300
250.

A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 Wb. Calculate the inductance of the coil.

A. 40H
B. 4 H
C. 4000H
D. 0.004 H
Answer» D. 0.004 H